LV36 Kap02.book Seite 2 Dienstag, 17. Mai 2011 2:17 14 MCCB UP TO 2… · Manual/motorized operating mechanisms 2/6 Siemens LV 36 · 2011 * You can order this quantity or a multiple

3VT2 Molded Case Circuit Breakers up to 250 ACatalog

General data

2/2 Siemens LV 36 · 2011

2

■ Overview

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45 6

8

11

12

1

7

13

9 10

26

27 28 29 30 31

25

14

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Molded case circuit breakerPlug-in deviceWithdrawable deviceBox terminalsCircular conductor terminalCircular conductor terminalMultiple feed-in terminalMultiple feed-in terminalRear connectionFront connection

Auxiliary conductor terminalRotary operating mechanismLateral rotary operating mechanismMechanical parallel switchingMechanical interlockingMechanical interlocking by Bowden wireMotor operating mechanismShunt trip unitUndervoltage trip unitConnecting cablePosition signalling

Keying pinsAuxiliary switch NC/NOAuxiliary switch NC/NOAuxiliary switch, change-over contactAuxiliary switch, earlyLockingtype leverSealing insetAdditional cover forovercurrent releasesTerminal coverInsulating barriers

123456789

10

11121314151617181920

22

21

23242526272829

3031

Connecting sets

Switching unit

Accessories for plug-in and withdrawable devices

Accessories

NS

O0_

0016

4a

LV36_Kap02.book Seite 2 Dienstag, 17. Mai 2011 2:17 14

© Siemens AG 2011

3VT2 Molded Case Circuit Breakers up to 250 ACatalog

Circuit breakers · Switch disconnectors

2/3Siemens LV 36 · 2011* You can order this quantity or a multiple thereof.

2

■ Overview

Switching unit

The switching unit includes:• Two connecting sets – for connecting busbars or cable lugs• Insulating barriers• A set of 4 installation bolts (M4 x 35)

The switching unit must be fitted with a trip unit (circuit breaker) or a switch disconnector unit (switch disconnector).

For maximum circuit breaker/switch disconnector loads in ac-cordance with the ambient temperature, see page 2/11.

For recommended cross-sections of cables, busbars and flexi-bars for fixed-mounted, plug-in and withdrawable versions, see page 2/11.

Circuit breaker

The circuit breakers consist of a 3- or 4-pole switching unit and a trip unit which is available with a choice of different character-istics.

Switch disconnector

The switch disconnector consists of a switching unit and a switch disconnector unit.

■ Selection and ordering data

Rated current In Breaking capacity Icu DT Order No. PS* Weight per PU approx.

A kA kg

Switching units

3-pole version250 36 B 3VT2 725-2AA36-0AA0 1 unit 2.840250 65 B 3VT2 725-3AA36-0AA0 1 unit 2.840

4-pole version, unprotected N250 36 B 3VT2 725-2AA46-0AA0 1 unit 2.840250 65 B 3VT2 725-3AA46-0AA0 1 unit 2.840

4-pole version, protected N250 36 B 3VT2 725-2AA56-0AA0 1 unit 2.840250 65 B 3VT2 725-3AA56-0AA0 1 unit 2.840


© Siemens AG 2011

3VT2 Molded Case Circuit Breakers up to 250 ACatalog - Accessories and Components


2/4 Siemens LV 36 · 2011* You can order this quantity or a multiple thereof.

2

■ Selection and ordering data for accessories

For a description of trip units, see page 2/15.1) Only for switching units 3VT2725-. AA36-0AA0 or 3VT2725-. AA46-0AA0 2) Only for switching unit 3VT2725-. AA56-0AA0

Rated current In Current setting of the inverse- time delayed overcurrent trip units „L“ Ir

DT Order No. PS* Weight per PU approx.

A A kg

Electronic trip units (ETU)Line protection, ETU LP, LI function 1)

with fixed overload trip unit, fixed short-circuit trip unit

160 160 B 3VT9 216-6AB00 1 unit 0.317

200 200 B 3VT9 220-6AB00 1 unit 0.317

250 250 B 3VT9 225-6AB00 1 unit 0.317

Distribution protection, ETU DP, LI function 1)

with adjustable thermal overload trip unit, adjustable short-circuit trip unit

100 40 ... 100 B 3VT9 210-6AC00 1 unit 0.283

160 63 ... 160 B 3VT9 216-6AC00 1 unit 0.284

250 100 ... 250 B 3VT9 225-6AC00 1 unit 0.283

Distribution protection with N-pole protection, ETU DPN, LIN function 2)


100 40 ... 100 B 3VT9 210-6BC00 1 unit 0.327

160 63 ... 160 B 3VT9 216-6BC00 1 unit 0.327

250 100 ... 250 B 3VT9 225-6BC00 1 unit 0.327

Motor/generator protection, ETU MP, LI function 1)


100 40 ... 100 B 3VT9 210-6AP00 1 unit 0.285

160 63 ... 160 B 3VT9 216-6AP00 1 unit 0.284

250 100 ... 250 B 3VT9 225-6AP00 1 unit 0.285

Motor/generator protection, ETU MPS, LSI function 1)


100 40 ... 100 B 3VT9 210-6AS00 1 unit 0.230

160 63 ... 160 B 3VT9 216-6AS00 1 unit 0.230

250 100 ... 250 B 3VT9 225-6AS00 1 unit 0.230

Switch disconnector unit 250 Switch disconnector unit1) B 3VT9 225-6DT00 1 unit 0.219


© Siemens AG 2011


Auxiliary switches · Auxiliary trip units


2

■ Overview

The circuit breakers can be equipped with• auxiliary switches,• shunt trip units,• undervoltage trip units.

Shunt trip units can trip the circuit breaker from a remote loca-tion. A control supply voltage is required.

An undervoltage trip unit trips the circuit breaker automatically when the circuit voltage drops below 70 % Ue. The undervoltage trip unit protects motors and other equipment in case of under-voltage. A control supply voltage is required.


1) Not to be used with 3VT9 200-3M..0 motorized operating mechanism.

Rated control supply voltage Us DT Order No. PS* Weight per PU approx.

AC 50/60 Hz/DC kg

Auxiliary switches with single NO contacts

AC/DC 60 ... 500 V B 3VT9 300-2AC10 1 unit 0.020

AC/DC 5 ... 60 V B 3VT9 300-2AC20 1 unit 0.120

with single NC contacts

AC/DC 60 ... 500 V B 3VT9 300-2AD10 1 unit 0.130

AC/DC 5 ... 60 V B 3VT9 300-2AD20 1 unit 0.130

with double contacts (2 x NO)

AC/DC 60 ... 500 V B 3VT9 300-2AE10 1 unit 0.260

AC/DC 5 ... 60 V B 3VT9 300-2AE20 1 unit 0.260

with double contacts (NO and NC)

AC/DC 60 ... 500 V B 3VT9 300-2AF10 1 unit 0.250

AC/DC 5 ... 60 V B 3VT9 300-2AF20 1 unit 0.250

with double contacts (2 x NC)

AC/DC 60 ... 500 V B 3VT9 300-2AG10 1 unit 0.240

AC/DC 5 ... 60 V B 3VT9 300-2AG20 1 unit 0.240

with change-over contacts

AC/DC 60 ... 250 V B 3VT9 300-2AH10 1 unit 0.013

AC/DC 5 ... 60 V B 3VT9 300-2AH20 1 unit 0.013

with leading contacts

AC/DC 60 ... 500 V B 3VT9 300-2AJ00 1 unit 0.040

Shunt trip units AC/DC 24, 40, 48 V B 3VT9 300-1SC00 1 unit 0.140

AC/DC 110 V B 3VT9 300-1SD00 1 unit 0.140

AC 230, 400, 500 V/DC 220 V B 3VT9 300-1SE00 1 unit 0.140

Undervoltage trip units AC/DC 24, 40, 48 V B 3VT9 300-1UC00 1 unit 0.110

AC/DC 110 V B 3VT9 300-1UD00 1 unit 0.110

AC 230, 400, 500 V/DC 220 V B 3VT9 300-1UE00 1 unit 0.110

with leading contact1)

AC/DC 24, 40, 48 V B 3VT9 300-1UC10 1 unit 0.120

AC/DC 110 V B 3VT9 300-1UD10 1 unit 0.120

AC 230, 400, 500 V/DC 220 V B 3VT9 300-1UE10 1 unit 0.120


© Siemens AG 2011


Manual/motorized operating mechanisms


2

■ Overview

Rotary operating mechanisms

The rotary operating mechanism must be combined from the following components:• For rotary operation of the circuit breaker:

- 3VT9 200-3HA.0 or 3VT9 200-3HB.0 for frontside operation - 3VT9 300-3HE10 or 3VT9 300-3HE20 black knob or - 3VT9 300-3HF20 red knob

• For operation through the switchgear cabinet door:- 3VT9 200-3HA.0 or 3VT9 200-3HB.0 for frontside operation - 3VT9 300-3HJ..extension shaft- 3VT9 300-3HG/HH.. coupling driver for door-coupling

operating mechanism- 3VT9 300-3HE/HF.. knob

• For operation through side wall of cabinet:

- 3VT9 200-3HC10 for right side operation OR- 3VT9 200-3HD10 for left side operation- 3VT9 300-3HJ..extension shaft- 3VT9 300-3HG/HH.. coupling driver for door-coupling

operating mechanism- 3VT9 300-3HE/HF.. knob

Mechanical interlocking and parallel switching • Mechanical interlocks for fixed-mounted version must be

combined from the following parts:- 2 x 3VT9 200-3HA/HB.. rotary operating mechanism- 2 x 3VT9 200-3HE/HF.. knob or - 1 x 3VT9 200-3HE/HF.. knob for parallel switching

• Mechanical interlocking by Bowden wire is intended for fixed-mounted, plug-in and withdrawable versions


Version Color DT Order No. PS* Weight

kg

Rotary operating mechanisms• not lockable gray B 3VT9 200-3HA10 1 unit 0.223

• lockable with padlock gray B 3VT9 200-3HA20 1 unit 0.223

• lockable with padlock yellow label B 3VT9 200-3HB20 1 unit 0.223

• for lateral operation,

• mounted on the right side,

• not lockable

grey N

B 3VT9 200-3HC10 1 unit 0.300

• for lateral operation,

• mounted on the left side,

• not lockable

grey N

B 3VT9 200-3HD10 1 unit 0.300

Knobs for rotary operating mechanism

• not lockable black B 3VT9 300-3HE10 1 unit 0.075

• lockable with padlock black B 3VT9 300-3HE20 1 unit 0.075

• lockable with padlock red B 3VT9 300-3HF20 1 unit 0.075

Coupling driver for door-coupling operating mechanism

To be used with the 3VT9 300-3HE10 or 3VT9 300-3HE20 black knob

• degree of protection IP40 black B 3VT9 300-3HG10 1 unit 0.140

• degree of protection IP66 black B 3VT9 300-3HG20 1 unit 0.140

Additionally requires 3VT9 300-3HF20 red knob

• degree of protection IP40 yellow B 3VT9 300-3HH10 1 unit 0.140

• degree of protection IP66 yellow B 3VT9 300-3HH20 1 unit 0.140

Extension shaft, length 365 mm, may be shortened

B 3VT9 300-3HJ10 1 unit 0.205

Extension shaft, telescopic, length 245 ... 410 mm

B 3VT9 300-3HJ20 1 unit 0.255


© Siemens AG 2011


Manual/motorized operating mechanisms


2

Version DT Order No. PS* Weight per PU approx.

kg

Mechanical interlocksThe mechanical interlock additionally requires the following parts:

• 2 x 3VT9 300-3HA../HB.. rotary operating mechanisms,• 1 or 2 x 3VT9 300-3HE../HF.. knobs

Mechanical interlock for fixed-mounted version only

B 3VT9 300-8LA00 1 unit 0.136

Mechanical interlock for parallel switching for fixed-mounted version only

B 3VT9 300-8LB00 1 unit 0.162

Mechanical interlocking by Bowden wires

• for two 3VT2 circuit breakers B 3VT9 200-8LC10 1 unit 0.393

• for one 3VT2 and one 3VT3 circuit breaker B 3VT9 300-8LC20 1 unit 0.393

Motorized operating mechanism with storage spring Degree of protection IP00, with locking device for 3 padlocks

AC/DC 24 V B 3VT9 200-3MJ00 1 unit 1.529

AC/DC 48 V B 3VT9 200-3ML00 1 unit 1.529

AC/DC 110 V B 3VT9 200-3MN00 1 unit 1.529

AC 230 V/DC 220 V B 3VT9 200-3MQ00 1 unit 1.564

Motorized operating mechanism with operations counter

AC/DC 24 V B 3VT9 200-3MJ10 1 unit 1.529

AC/DC 48 V B 3VT9 200-3ML10 1 unit 1.564

AC/DC 110 V B 3VT9 200-3MN10 1 unit 1.546

AC 230 V/DC 220 V B 3VT9 200-3MQ10 1 unit 1.546

Accessories for motorized operating mechanism Operations counter with cable, length 110 cm

B 3VT9 300-3MF10 1 unit 0.003

Extension cable for motorized operating mechanism, 12 wires, length 60 cm

B 3VT9 300-3MF00 1 unit 0.060


© Siemens AG 2011


Mounting accessories


2

■ Overview

Plug-in version base• The plug-in base includes:

- Complete accessories for assembling circuit breakers/ switch disconnectors in plug-in version.

- A set of four installation bolts (M4 x 40) for fixing the switch-ing unit to the plug-in base.

3VT9 200-4TA30 connecting sets are intended for connecting the plug-in base with busbars or cable lugs. These connecting sets are included in the scope of supply of the 3-pole 3VT2 725-.AA36-0AA0 or 4-pole 3VT2 725-.AA46-0AA0 switch-ing units.

Other connecting sets are also available.

Withdrawable version base

In the withdrawable version base the circuit breaker is fixed by side racks, therefore screws are not necessary. Changing of cir-cuit breaker is faster as compared to plug-in version. • The withdrawable version base includes complete accesso-

ries for assembling circuit breakers/switch disconnectors in withdrawable version.

• The circuit breaker located inside the withdrawable version base can be moved between an operating position (ON-OFF) and a checking position (withdrawn).



kg

Plug-in base3-pole version B 3VT9 200-4PA30 1 unit 1.766

4-pole version B 3VT9 200-4PA40 1 unit 2.100

Withdrawable version basesame as plug-in base, but with additional side panels and racks

3-pole version B 3VT9 200-4WA30 1 unit 3.497

4-pole version B 3VT9 200-4WA40 1 unit 3.200


© Siemens AG 2011


Connecting accessories


2


Version Conductor cross-section S

Type of connection

DT Order No. PS* Weight per PU approx.

mm2 kg

Terminals for fixed-mounted circuit breakers Connecting sets for 3-pole versionBox terminals

1 set = 3 units

16 ... 150 Cu cables, flexibars

B 3VT9 200-4TC30 1 unit 0.240

Terminals for circular conductors

25 ... 150 Cu/Al cables B 3VT9 215-4TD30 1 unit 0.200


Terminals for circular conductors

for enhancing termination point protection to IP20 use the 3VT9 200-8CB30 terminal cover

2 x 25 ... 150 Cu/Al cables B 3VT9 215-4TF30 1 unit 0.520


Terminals for circular conductors, for 6 cables


Terminals for rear connection

1 set = 3 units

Cu/Al busbars cable lugs

B 3VT9 200-4RC30 1 unit 0.237

Terminals for front connection

1 set = 3 units

Included in every supply of switching units

Cu/Al busbars, cable lugs, flexibars

B 3VT9 200-4TA30 1 unit 0.120

Auxiliary conductor terminals 1,5 ... 2,5; 4 ... 6

Cu flexible conductors

B 3VT9 200-4TN30 1 unit 0.017

Front connection barsfor increased pole spacing -- Cu/Al busbars

cable lugs, flexibars

B 3VT9 200-4ED30 1 unit 0.300

for increased pole spacing -- Cu/Al busbars cable lugs, flexibars

B 3VT9 200-4EE30 1 unit 0.447

Single terminals for 3- or 4-pole versionsBox terminal

1 set = 1 unit

16 ... 150 Cu cables, flexibars

B 3VT9 200-4TC00 1 unit 0.320

Terminal for circular conductors

1 set = 1 unit


1 set = 1 unit 150 ... 240 Cu/Al cables B 3VT9 224-4TD00 1 unit 0.280

1 set = 1 unit 2 x 25 ... 150 Cu/Al cables B 3VT9 215-4TF00 1 unit 0.680

1 set = 1 unit 2 x 150 ... 240 Cu/Al cables B 3VT9 224-4TF00 1 unit 0.680

Terminals for circular conductors, for 6 cables


Terminal for rear connection

1 set = 1 unit

Cu/Al busbars cable lugs

B 3VT9 200-4RC00 1 unit 0.320


© Siemens AG 2011


Further accessories


2



kg

Insulating barriers

Included in the scope of supply of the switching unit; in case the circuit breaker/switch disconnector is fed-in from below (power supply connected to terminals 2, 4, 6), it is necessary in most cases to install these barriers also on the bottom side

• set of two pieces, for 3-pole version B 3VT9 300-8CE30 1 unit 0.077

• one piece, additionally needed for 4-pole version B 3VT9 300-8CE00 1 unit 0.050

Terminal cover, degree of protection IP20

Increases degree of protection of the connection point to IP20 when using 3VT9 224-4TD30, 3VT9 215-4TF30, 3VT9 224-4TF30 or 3VT9 203-4TF30 block type terminals, intended for fixed-mounted, plug-in and withdrawable versions.

• 3-pole version B 3VT9 200-8CB30 1 unit 0.098

• 4-pole version B 3VT9 200-8CB40 1 unit 0.100

Locking device for knob B 3VT9 200-3HL00 1 unit 0.013

Enables locking the circuit breaker in „switched off manually“ position. For locking the device, you can use up to three padlocks with a shank diameter of max. 6 mm

Bolt sealing inset B 3VT9 200-8BN00 1 unit 0.001

Provides sealing for:• trip unit• accessory compartment cover• terminal cover• rotary operating mechanism• motorized operating mechanism

Additional cover for trip units B 3VT9 200-8BL00 1 unit 0.080

Provides protection for trip units

Connecting cable B 3VT9 300-4PL00 1 unit 0.020

For connecting the circuit breaker/switch disconnector accessories in withdrawable version (can also be used for plug-in and fixed-mounted version)

Position signalling switch B 3VT9 300-4WL00 1 unit 0.020

For indicating the position of the circuit breaker located in the plug-in base or withdrawable version base

Coding set B 3VT9 200-4WN00 1 unit 0.002

Prevents insertion of wrong switching unit into the plug-in base or withdrawable version base

Pushbutton cover B 3VT9 300-3MF20 1 unit 0.054

For motorized operating mechanism


© Siemens AG 2011

3VT2 Molded Case Circuit Breakers up to 250 ATechnical Information


2/11Siemens LV 36 · 2011

2

■ Design

Installation and connection

Main circuit• The main circuit is connected with Cu or Al busbars, or with

cables and cable lugs.• Connecting sets are available for additional connecting op-

tions (see page 2/9).• Generally, conductors from the power supply are connected

to input terminals 1, 3, 5 and conductors from the load to ter-minals 2, 4, 6. But it is possible to exchange this connection (exchanging input and output terminals without limiting rated short-circuit ultimate breaking capacity Icu).

• In case of feed-in from below, the circuit breakers/switch dis-connectors must be fitted with 3VT9 300-8CE30 insulating barriers also next to and between terminals 2, 4, 6.

• We recommend painting the connecting busbars with different colors.

• Input and output connectors/busbars must be mechanically reinforced in order to avoid transferring electrodynamic forces to the circuit breaker during short circuiting.

• The power circuit must be connected in such a way that the deionizing space of the circuit breaker/switch disconnector is not obstructed (see page 2/43).

Auxiliary circuits• Switches, shunt trip units or undervoltage trip units are con-

nected using flexible 0.5 ... 1 mm2 Cu conductors.• Motorized operating mechanism and auxiliary circuits of the

plug-in base or withdrawable version base are connected with a connector.

Recommended cross-sections of cables, busbars and flexibars for fixed-mounted, plug-in and withdrawable versions

Maximum circuit breaker/switch disconnector loads in accordance with the ambient temperature

3VT2 circuit breaker/switch disconnector connection to pole by 1 x 120 mm2 Cu cable

Conductor cross-sections of main terminals

Rated current In

Permissible cross-section S

Busbars W x H

Cu Al Cu Al

A mm2 mm2 mm mm

40 10 16

50 10 16

63 16 25

80 25 35

100 35 50 20 x 2 25 x 2

125 50 70 25 x 2 25 x 3

160 70 95 25 x 3 25 x 4

200 95 120 25 x 4 25 x 5

250 120 150 25 x 5 25 x 6

50 °C 55 °C 60 °C 65 °C 70 °C

250 A 250 A 250 A 250 A 250 A

Order No. Maximum permitted current Imax

Maximum permissible conductor cross-section

Cable type

Sector-shaped con-ductor, stranded

Sector-shaped conductor, solid

Round conductor, stranded

Round conductor, solid

Busbars and cable lugs

Technical information

W x H

A mm2 mm2 mm2 mm2 mm See page

3VT9 200-4TA30 250 25 x ...

3VT9 200-4RC30 250 25 x ... 2/47, 2/58

3VT9 200-4TF00

3VT9 200-4TC30 250 16 ... 150 Cu 10 ...150 Cu 16 ... 150 10 ...150 Cu

3VT9 200-4TC00

3VT9 215-4TD30 250 25 ... 150 Cu/Al 16 ...150 Cu/Al 25 ... 150 Cu/Al 16 ... 150 Cu/Al

3VT9 215-4TD00

3VT9 224-4TD30 250 150 ... 240 Cu/Al 120 ... 240 Cu/Al 150 ... 240 Cu/Al 120 ... 240 Cu/Al 2/45, 2/58

3VT9 224-4TD00

3VT9 215-4TF30 250 2 x (25 ... 150) Cu/Al 2 x (16 ... 150) Cu/Al 2 x (25 ... 150) Cu/Al 2 x (16 ... 150) Cu/Al 2/46, 2/58

3VT9 215-4TF00


3VT9 224-4TF00


3VT9 203-4TF00

3VT9 200-4ED30 250 2/47

3VT9 200-4EE30 250 2/48

3VT9 200-4TN30 10/16 1,5 ... 2,54 ... 6 Cu flexible conductor


© Siemens AG 2011



2/12 Siemens LV 36 · 2011

2

■ Technical specifications

✓ available

-- unavailable

+ in preparation

Description Circuit breakers Switch disconnector

Order numbers 3VT2 725-2AA36/46/56-0AA0, 3VT2 725-3AA36/46/56-0AA0

3VT9 225-6DT00

Standards EN 60947-2, IEC 60947-2 EN 60947-3, IEC 60947-3

Approval marks

Number of poles 3, 4

Rated current In A 100, 160, 200, 250 --

Rated uninterrupted current Iu A 250

Rated operational current Ie A -- 250

Rated operational voltage Ue V AC max. 690 AC max. 690DC max. 440

Rated frequency fn Hz 50/60

Rated impulse withstand voltage Uimp kV 8

Rated insulation voltage Ui V 690

Utilization category (selectivity) AC 690 V A --

Utilization category (switching mode)

• AC 609 V -- AC-23 B

• DC 440 V -- DC-23 B

Rated short-time withstand current Ue = AC 690 V Icw/t 2,5 kA/1 s 3 kA/5 s

Series Ue 3VT2 N 3VT2 H Ue --

Rated ultimate short-circuit breaking capacity (rms value) Icu 60 kA 36 kA 16 kA 10 kA

100 kA65 kA25 kA13 kA

AC 230 VAC 415 VAC 500 V AC 690 V

--

Rated short-circuit service breaking capacity (rms value) Ics/Ue 30 kA 18 kA

8 kA 5 kA

50 kA36 kA13 kA

8 kA

AC 230 VAC 415 VAC 500 VAC 690 V

--

Rated short-circuit making capacity (peak value) Icm/Ue 75 kA 140 kA AC 415 V 4 kA/AC 15 V, 4 kA/AC 440 V

Off-time at Icu ms 10 --

Losses per pole at In = 250 A W 18

Mechanical endurance cycles 30 000

Electrical endurance (Ue = AC 415 V ) cycles 3 000

Switching frequency cycles/hr

120

Operating force N 80

Front-side device protection IP40

Terminal protection IP20

Operating conditionsReference ambient temperature °C 40

Ambient temperature range °C -40 ... +55

Working environment dry and tropical climate

Pollution degree 3

Max. elevation m 2000

Seismic resistance m/s2 3 g at 8 ... 50 Hz

Design modificationsFront/rear connection ✓/✓

Plug-in design ✓/+

Withdrawable design ✓/+

AccessoriesSwitches – auxiliary/relative/signal/leading ✓/✓/✓/✓

Shunt trip unit/with alarm switch ✓

Undervoltage trip unit/with leading switch/with alarm switch ✓/✓

Front rotary operating mechanism/lateral operating mechanism at the right/left hand side

✓/✓

Mechanical interlocking of rotary operating mechanisms, by Bowden wire ✓/✓

Motorized operating mechanism/with operations counter ✓/✓

Locking-type knob ✓

Bolt sealing inset/additional cover for trip unit ✓/✓


© Siemens AG 2011



2/13Siemens LV 36 · 2011

2

■ Schematics

Circuit breakers with accessories

3-pole version

1) Only for 4-pole version of 3VT2 725-.AA46-0AA0 switching unit.

L+Q3

SB

X3

MP

S5C

X3 JX4 A2

3VT9

300

-1U

.00

3VT9

300

-1S

.00

3VT9

300

-1U

.10

3VT9

300

-2A

J00

NS

O0_

0008

9

A2

10.Y

210

.Y1

10.Y

1

10.Y

310

.Y2

10.Y

4

B2

A1 A1

PEYC

N–

9 7

8

3

6

4

2

1

2

5

1

13VT9 2..-6..

-4WA30

-4PA30

-4WA30

-4PA30

SO 3

SO 1

T3T2

T1

V QB

A

SO 2

1 4 2 1 4 2 2 4 6

2 4 6

3 5

M P U< U<

I>I>

U

2 4 1 1 3 5

TEST

Recommended wiring of thecontrol circuits

Motor drive Auxiliary trips/Leading contact

Plug-in device/Withdrawable device

Main circuit


ON

OFF

or or or

Ext.oper.counter

Acc. comp. no.10

NC NO

3VT9

300

-2A

C10

3VT9

300

-2A

C10

3VT9

300

-2A

D10

3VT9

300

-2A

D10

3VT9

300

-2A

H10

3VT9

300

-2A

H10

3VT9

300

-2A

G10

3VT9

300

-2A

F10

3VT9

300

-2A

E10

1.4

1.2

1.1

2.4

2.2

2.1

3.4

3.2

3.1

2.4

3.4

2.2

3.4

2.2

3.2

X2

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

2.3

2.1

2.2

2.4

3.3

3.1

3.2

3.4

2.3

3.3

2.1

3.3

2.1

3.1

A

B

1.3

1.1

1.2

1.4

3VT9

300

-2A

C10

3VT9

300

-2A

D10

3VT9

300

-2A

H10

NS

O0_

0009

0

X11 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Connecting cable

relative auxiliarysignal auxiliary

acc. c. no. 2 acc. c. no. 3 acc. c. no. 2 + 3acc. c. no. 1

Connecting cable

or or

or or or or or or or

Switches

MP 3VT3 200-3M..0 motorized operating mechanism

M Motor

P Energy storage device

X3 Connector to connect control circuits

X4 Connector for external operations counter

S5 Switch to signal AUTO (NO-C) / MANUAL (NC-C) modes

YC 3VT9 300-3MF10 external operations counter

B Recommended wiring of the control circuits (not included in the scope of supply of the operating mechanism)

ON, OFF Pushbutton

S Switch for energy storage (switched on = automatic storage, switch may be continuously switched on)

Q3 Motorized operating mechanism circuit breaker

J 3VT2 725-.AA36-0AA0 switching unit

Q Main contacts

T1, T2, T3, T41) Current transformers

V Trip-free mechanism

TEST Pushbutton to test trip unit

3VT9 200-4PA30 3-pole plug-in base

3VT9 200-4WA30 3-pole withdrawable version base

X1, X2 3VT9 300-4PL00 connecting cable

SO1, SO2, SO3 Contacts signalling position of circuit breaker/switch discon-nector in plug-in base or withdrawable version base(Position signalling switch 3VT9 300-4WL00)

3VT9 300-14.00 Undervoltage trip unit

3VT9 300-15.00 Shunt trip unit

3VT9 300-14.10 Undervoltage trip unit with leading contact

3VT9 300-2AJ00 Leading contact

acc. c. no. Accessory compartment number


© Siemens AG 2011



2/14 Siemens LV 36 · 2011

2

4-pole version

L+Q3

X3

MP

S5C

X3 JX4 A2

A2

10.Y

210

.Y1

10.Y

1

10.Y

310

.Y2

10.Y

4

B2

A1 A1B1

PEYC

N–

9 7

8

3

6

4

2

1

2

5

1

13VT9 2..-6..0

SO 3

SO 1

T3T2

T1

V QB

A

SO 2

1 4 2 1 4 2 2 4

3 5

M P U< U<

I>I>

U

6

2 4 1 1 3 5

TESTT4

N

7

N

2 4 6 8

NS

O0_

0009

1

3VT9

300

-1U

.00

3VT9

300

-1S

.00

3VT9

300

-1U

.10

3VT9

300

-2A

J00

S

B

-4WA30

-4PA30

-4WA30

-4PA30


Ext.oper.counter

Acc. comp. no. 10



Main circuit

ON

OFF

Auxiliary trips/Leading contactMotor drive

or or or

NC NO

X2

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

2.3

2.1

2.2

2.4

3.3

3.1

3.2

3.4

2.3

3.3

2.1

3.3

2.1

3.1

4.3

4.1

4.2

4.4

5.3

5.1

5.2

5.4

A

B

1.3

1.1

1.2

1.4

3VT9

300

-2A

C10

3VT9

300

-2A

D10

3VT9

300

-2A

H10

1.4

1.2

1.1

2.4

2.2

2.1

3.4

3.2

3.1

2.4

3.4

2.2

3.4

2.2

3.2

4.4

4.2

4.1

5.4

5.2

5.1

6.3

6.1

6.2

6.4

6.4

6.2

6.1

NS

O0_

0009

2

X11 2 3 4 5 6 7 8 9 10 1112 13 14 15

3VT9

300

-2A

C10

3VT9

300

-2A

D10

3VT9

300

-2A

H10

3VT9

300

-2A

D10

3VT9

300

-2A

H10

3VT9

300

-2A

G10

3VT9

300

-2A

F10

3VT9

300

-2A

E10

3VT9

300

-2A

C10

3VT9

300

-2A

C10

3VT9

300

-2A

D10

3VT9

300

-2A

H10

3VT9

300

-2A

C10

3VT9

300

-2A

D10

3VT9

300

-2A

H10

3VT9

300

-2A

C10

3VT9

300

-2A

D10

3VT9

300

-2A

H10

Connecting cable

relative auxiliarysignal auxiliary auxiliary auxiliary auxiliary

acc. c. no. 2 acc. c. no. 3 acc.c. no. 2 + 3 acc. c. no. 4 acc. c. no. 5acc.c. no. 1 acc. c. no. 6

or or

or or or or or or or or or or or or or

Switches

Connecting cable


© Siemens AG 2011

3VT2 Molded Case Circuit Breakers up to 250 ATechnical Information - Accessories and Components

Trip units

2/15Siemens LV 36 · 2011

2

■ Overview

The electronic trip unit is a separate and interchangeable unit, which has to be ordered in addition to the 3VT2 switching unit. By exchanging the trip unit, the range of the rated current of the circuit breaker can be easily changed.

Trip units for 3VT2 switching units are available for current values of In = 100, 160 and 250 A. The ETU LP feature rated currents of 160, 200 and 250 A. The trip units (including regulation of -60%) cover a current range from 40 to 250 A.

Tripping characteristics

Several different trip units are available. Some have adjustable characteristics (in order to match the protected device and to achieve the required selectivity).

ETU LP, DP, MP and MPS trip units are intended for 3-pole 3VT2 725-.AA36-0AA0 switching units and 4-pole 3VT2 725-.AA46-0AA0 switching units with disconnecting of the N pole.

ETU LP trip units

ETU LP trip units have one type of characteristic and fixed-set Ir and Ii settings.

ETU DP trip units

ETU DP trip units have one type of characteristic with adjustable Ir and Ii.

ETU MP trip units

ETU MP trip units have more characteristics with adjustable Ir, tr and Ii.

ETU MPS trip units

ETU MPS trip units have more characteristics with adjustable Ir, tr, Ii and tv.

ETU DPN trip units

ETU DPN trip units are intended for 4-pole 3VT2 725-AA56-0AA0 switching units with protected N pole. They have more charac-teristics with adjustable Ir , tr , Ii and IN.

NS

O0_

0050

2

t

I

L I

NS

O0_

0050

6

t

I

L I

Ir

Ii

tr

NS

O0_

0021

5

t

I

L I

Ir

50 ms

0 ms

Ii

NS

O0_

0021

4

t

I

L S I

Ir

Isd tsd

tr

NS

O0_

0053

1

t

I

L I

Ir

tr

Ii

IN


© Siemens AG 2011


Trip units

2/16 Siemens LV 36 · 2011

2

■ Function

Trip units ETU LP, DP, MP and MPS - description of function

Proper functioning of trip units does not depend on the current waveform in the main circuit. The function of the trip unit is sup-ported by a microprocessor, which processes a sampled signal of the power circuit and recalculates it to obtain an rms value. Therefore, the trip units are suitable for protecting circuits where the sinusoidal current is distorted by high harmonics (e.g. circuits with controlled rectifiers, power factor compensa-tors, pulse loading, and the like).

All the trip units protect a circuit against short-circuiting and overloading. The tripping characteristics are independent of the ambient temperature. The trip unit is fixed to the switching unit by two bolts. The transparent cover over the adjustment controls can be sealed (with sealing wire).

Setting the tripping characteristic

The tripping characteristic of the trip units is defined by standard EN 60947-2. For trip units ETU DP, MP, MPS and DPN, the char-acteristic is adjusted with latched switches located on the trip unit.

A visual demonstration on setting the tripping characteristic is available in the SIMARIS design software (Tool for Dimensioning Electrical Power Distribution).

L is a zone of low overcurrents and includes the area of thermal protection.

S is a zone of medium overcurrents and includes long-distance short-circuit protection for lines. Intentional delay in tripping of these low short-circuit currents can be used to achieve selectiv-ity of protective devices. For MPS trip units, the delay can be set at 0, 100, 200 or 300 ms.

I is a zone of high overcurrents and includes protection against ultimate short-circuit currents. For MP trip units, the time delay can be set at 0 or 50 ms.

1. Time-dependent trip unit (thermal) L• The time-dependent trip unit ETU DP is adjusted with the Ir

switch. The Ir switch adjusts the rated current of the circuit breaker, with the characteristic shifting on the current axis. The trip unit is set to one type of characteristic.

• The time-dependent trip units ETU MP, MPS and DPN are ad-justed with two switches, Ir and tr. The first (Ir) switch adjusts the circuit breaker’s rated current. The characteristic moves along the current axis. By turning the other switch (tr), the time is adjusted after which the circuit breaker will trip while passing through 7.2 Ir. The tripping characteristic thus moves on the time axis. Using the tr switch, it is possible to set a total of 8 characteristics. ETU MP and MPS trip units have 4 characteristics for motor protection and 4 characteristics for protecting lines. Breaking times correspond to trip unit classes 10, 20, 30. By changing tr, it is possible to select the trip unit characteristic according to the required motor starting characteristic (light, medium, heavy or very heavy starting). ETU DPN trip units have 8 characteristics for protecting lines or transformers. It is not possible to turn the circuit breaker back on immedi-ately after the time-dependent trip unit has been actuated and the circuit breaker has tripped. The trip unit must be allowed to cool off (it has a thermal memory). The thermal memory can be disabled by turning the switch from the normal “Tt” position to the “T0” position. In the “T0” position the time-dependent trip unit remains active, and only its thermal memory is deacti-vated. Switching off the thermal memory should be used only in well-justified cases, and with the knowledge that there could be rising temperature in the protected device, causing re-peated tripping.

2. Delayed time-independent trip unit S

This trip unit characteristic is available only in ETU MPS trip units. It is used to set up a selective cascade of circuit breakers. It is set up using parameters Isd and tv. Isd is an n-multiple of cur-rent Ir (Isd= n × Ir). Isd is a short-circuit current that, within the span of Ii to Ii, will trip the circuit breaker with delay tv, where tv is a delay set up for switching off the trip unit. The delayed time-independent trip unit actuates the circuit breaker if the current in the circuit reaches at least the preset n-multiple and lasts at least the preset delay time tv.

3. Time-independent instantaneous trip unit (short-circuit trip unit) I• For trip units ETU DP, MP and DPN, the time-independent in-

stantaneous trip unit is adjusted with the Irm switch. The Irm switch is used for setting up the short-circuit current that, when reached or exceeded, causes instantaneous tripping of the circuit breaker.


© Siemens AG 2011


Trip units

2/17Siemens LV 36 · 2011

2

Tripping characteristics of ETU LP, DP, MP, MPS and DPN trip units with load

The tripping characteristic from the cold state indicates the trip-ping times during which it is assumed that, up to the moment when an overcurrent develops, no current is flowing through the circuit breaker.

The tripping characteristic tripped from warm state indicates the tripping times during which it is assumed that, before the mo-ment when an overcurrent develops, current is flowing through the circuit breaker.

Characteristics of electronic trip units are independent of the ambient temperature and are plotted in a cold state. Digital trip units enable simulation of a trip unit in warm state. The tripping times become shorter in a steady state, as shown in the following diagram. The steady state is a period during which the charac-teristic does not change. If the circuit breaker is loaded with a re-duced current for at least 30 minutes, the tripping times will be cut by a half. If the load is less than 70% of Ir , the tripping time does not become shorter.

Decrease of tripping time with load

T - When tripping from the “warm” state, the tripping time of the characteristic is cut short during the standstill time tu by coeffi-cient k.

Thermal standstill time of the characteristics

For all trip units, the thermal standstill time is tu ≥ 30 min. During this time, the tripping time tv is cut short from the cold-state char-acteristic by the coefficient k.

The real tripping time is ts = k x tvExample

The shortening constant can be read from the graph. With steady current 85% of Ir the real tripping time will be shortened to:

ts = 0.74 x tvk [–] time shortening coefficient

Ir [A] adjusted rated current of the trip unit

tv [s] tripping time of the trip unit derived from the characteristic

ts [s] real tripping time of the trip unit tripped from warm state

tu [s] standstill period for particular characteristics

Trip units are preset by the manufacturer

Ir = min

Restart = T(t)

Ii = min, 0 ms

tr = TV, t(t), min

Isd = 0 ms, min

IN = 0.5 Ir

Trip units ETU LP - Lines protection• Provides protection for lines with low starting currents

The 3VT9 2..-6AB00 trip unit is intended only for3VT2725 -.AA36-0AA0 or 3VT2725 -.AA46-0AA0 switching unit. The LP trip unit has a thermal memory that cannot be disabled. The rated currents of the trip units are given by their order num-bers and correspond to a standardized series of currents (see specifications table). The short-circuit trip unit is fixed-set at 4 × In.

One of the advantages of the LP trip unit is its simplicity, because it does not require any adjustment. Therefore, it is intended for less complicated applications.

Specifications


NS

O0_

0021

7

Ir [%]

1.0

T

0.8

0.6

0.4

0.2

0.050 60 70 80 90 100

k [-]

Order No. Rated current In Instantaneous short circuit protection Ir

A A

3VT9 216-6AB00 160 640

3VT9 200-6AB00 200 800

3VT9 250-6AB00 250 1000

20

200

2000

50

500

5000

10

100

1000

10000

t [s]

NSO0_00218

2 5 20 50100.5 1x In

0.010.02

0.050.10.2

0.512

5

I

Ii

L

In = 160 AIn = 200 AIn = 250 A

Ir


© Siemens AG 2011


Trip units

2/18 Siemens LV 36 · 2011

2

Trip units ETU DP - Distribution protection• Provides protection for lines and transformers

The 3VT9 2..-6AC00 trip unit is intended only for3VT2725-.AA36-0AA0 or 3VT2725-.AA46-0AA0 switching units. Operation of the trip unit is controlled by a microprocessor. The trip unit is equipped with a thermal memory that can be disabled by turning a switch on the front panel from position T(t) to position T(0). After disabling the thermal memory, the thermal trip unit re-mains active. The operational state 70% of Ir is signalled by an LED indicator that flashes green in a 1.5 s interval. As the load grows, the blinking frequency of the diode increases. In case of a load larger than 110% of Ir, this LED will turn red and will begin to blink red just before tripping.

Located on the lower part of the DP trip unit cover are two pho-tocells for communicating with the prospective signalling unit.

DP trip units have tripping characteristics especially designed for practical purposes that provide for optimal exploitation of transformers up to 1.5 Ir.

DP trip units offer simple adjustment of the tripping characteris-tics. Set-up includes only the rated current and the short-circuit tripping level at 4 Ir or 8 Ir.


Adjustable specifications

NSO0_00219

x In1 2 5 20 50100.1 0.2 0.5

0.02

0.02

0.05

0.05

0.01

0.01

20

200

2000

50

500

5000

10

100

1000

10000

t [s]

0.010.02

0.050.1

0.1

0.1

0.2

0.512

5

x

4x 4x8x 8x

4x 4x8x 8x

4x 4x8x 8x

I

L

Ii

Ii

IiIn = 100 A

In = 160 A

In = 250 A

In = 100 AIn = 160 AIn = 250 A

Ir Ii

33

Irmin. max.

Order No. Rated current In

Overload pro-tection Ir

Restart Instantaneous short circuit protection Ii

A A

40

43

46

48

50

55

58

3VT9 210-6AC00 100 61 T(0) 4 x lr

63 T(t) 8 x lr69

72

76

80

87

91

100

63

69

72

80

87

91

100

3VT9 216-6AC00 160 110 T(0) 4 x lr

115 T(t) 8 x lr

120

125

130

137

144

150

160

100

110

115

125

137

144

160

3VT9 225-6AC00 250 172 T(0) 4 x lr180 T(t) 8 x lr

190

200

210

220

231

243

250


© Siemens AG 2011


Trip units

2/19Siemens LV 36 · 2011

2

Trip units ETU MP - Motor protection• Provides protection for motors and generators• Can protect lines and transformers

The 3VT9 2..-6AP00 trip unit is intended only for 3VT2725-.AA36-0AA0 and 3VT2725-.AA46-0AA0 switching units. The operation of the MP trip unit is controlled by a microprocessor. The MP trip unit is equipped with a thermal memory that can be disabled by turning a switch on the front panel from position T(t) to position T(0). After disabling of the thermal memory, the thermal trip unit remains active.

When one or two phases fail (due to current greater than Ir in the remaining phases), in the M-characteristic mode, the switch will open with a 4 s delay (so called undercurrent tripping).

Another parameter for adjusting the MP trip unit consists of the rated current and short-circuit tripping level. The time delay of the short-circuit trip unit can be set to 0 or 50 ms. The operational state 70% of Ir is signalled by an LED indicator that flashes green in a 1.5 s interval. As the load grows, the blinking frequency of the diode increases. In case of a load larger than 110% of Ir, this LED will turn red and will begin to blink red just before tripping. Located on the lower part of the MP trip unit cover are two pho-tocells for communicating with the prospective signalling unit.

MP trip units have tripping characteristics especially designed for practical purposes that provide for optimal exploitation of transformers up to 1.5 Ir. A total of 8 characteristics can be set on the trip unit. Mode “M” provides 4 characteristics suitable for protecting motors and mode “TV” provides 4 characteristics for protecting transformers and lines. The shape of each character-istic can be changed with a selector switch.


Order No. Rated cur-rent In

Over-load protec-tion Ir

tr (7,2 x Ir) Restart Instantaneous short circuit protection Ii

A A s kA ms

40 1 (TV 1) T(0) 0,125

43 3 (TV 3) T(0 0,25

46 10 (TV 10) T(0 0,4

48 20 (TV 20) T(0) 0,6 0

50 20 (M 20) T(0 0,8

55 15 (M 15) T(0) 1,0

58 8 (M 8) T(0 1,25

3VT9 210-6AP00 100 61 3 (M 3) T(0 1,5

63 3 (M 3) T(t) 1,5

69 8 (M 8) T(t) 1,25

72 15 (M 15) T(t) 1,0

76 20 (M 20) T(t) 0,8 50

80 20 (TV 20) T(t) 0,6

87 10 (TV 10) T(t) 0,4

91 3 (TV 3) T(t) 0,25

100 1 (TV 1) T(t) 0,125

63 1 (TV 1) T(0) 0,2

69 3 (TV 3) T(0 0,4

72 10 (TV 10) T(0 0,6

80 20 (TV 20) T(0) 1,0

87 20 (M 20) T(0 1,3 0

91 15 (M 15) T(0) 1,6

100 8 (M 8) T(0 2,0

3VT9 216-6AP00 160 110 3 (M 3) T(0) 2,4

115 3 (M 3) T(t) 2,0

120 8 (M 8) T(t) 2,0

125 15 (M 15) T(t) 1,6

130 20 (M 20) T(t) 1,3

137 20 (TV 20) T(t) 1,0 50

144 10 (TV 10) T(t) 0,6

150 3 (TV 3) T(t) 0,4

160 1 (TV 1) T(t) 0,2

100 1 (TV 1) T(0) 0,35

110 3 (TV 3) T(0 0,5

115 10 (TV 10) T(0 0,75

125 20 (TV 20) T(0) 1,0 0

137 20 (M 20) T(0 1,25

144 15 (M 15) T(0) 1,5

160 8 (M 8) T(0 2,0

3VT9 225-6AP00 250 172 3 (M 3) T(0) 2,5

180 3 (M 3) T(t) 2,0

190 8 (M 8) T(t) 2,0

200 15 (M 15) T(t) 1,5

210 20 (M 20) T(t) 1,25

220 20 (TV 20) T(t) 1,0 50

231 10 (TV 10) T(t) 0,75

243 3 (TV 3) T(t) 0,5

250 1 (TV 1) T(t) 0,35


© Siemens AG 2011


Trip units

2/20 Siemens LV 36 · 2011

2


NSO0_00220

x In1 2 5 20 50100.1 0.2 0.5

x In1 2 5 20 50100.1 0.2 0.5

0.02

0.02

0.05

0.05

0.01

0.01

20

200

2000

50

500

5000

10

100

1000

10000

t [s]

0.010.02

0.050.1

0.1

0.1

0.2

0.512

5

0.02

0.02

0.05

0.05

0.01

0.01

20

200

2000

50

500

5000

10

100

1000

10000

t [s]

0.010.02

0.050.1

0.1

0.1

0.2

0.512

5

20

1010

33

11

20

1.51.251.00.80.60.40.250.1250

2.4

2.5

2.0

2.0

1.6

1.5

1.3

1.25

1.0

1.0

0.6

0.75

0.4

0.5

0.2

0.35

0

0

50

50

50

1.51.251.00.80.60.40.250.1250

2.4

2.5

2.0

2.0

1.6

1.5

1.3

1.25

1.0

1.0

0.6

0.75

0.4

0.5

0.2

0.35

0

0

50

50

50

TV

Ir tr 0 ms 50 ms Ii

L L

I I

tr tr

In = 100 A

In = 100 AIn = 160 AIn = 250 A

In = 100 AIn = 160 AIn = 250 A

In = 160 A

In = 250 A Ii [kA]

Ii [kA]

Ii [kA]

Ii [kA]

Ii [kA]

Ii [kA]

M

Ir tr 0 ms 50 ms Ii

In = 100 A

In = 160 A

In = 250 A

Irmin. max.Irmin. max.

201515

33

88

20


© Siemens AG 2011


Trip units

2/21Siemens LV 36 · 2011

2

Trip units ETU MPS - Motor protection with timing selectivity• Provides protection for motors and generators• Can protect lines and transformers• Enables adjusting time delay of time-independent trip unit

The 3VT9 2..-6AS00 trip unit is intended for 3VT2725-.AA36-0AA0 or 3VT2725-.AA46-0AA0 switching units. The operation of the trip unit is controlled by a microprocessor. The trip unit is equipped with a thermal memory that can be disabled by turn-ing a switch on the front panel from position T(t) to position T(0). After disabling of the thermal memory, the thermal trip unit re-mains active.

When one or two phases fail (due to current greater than Ir in the remaining phases), in the M-characteristic mode, the switch will open with a 4 s delay (so called undercurrent trip unit).

Another parameter for adjusting the MPS trip unit is the rated current and tripping level of the delayed short-circuit trip unit. The time delay (tsd) can be set on the delayed short-circuit trip unit at 0, 100, 200 or 300 ms. The operational state 70% of Ir is signalled by an LED indicator that flashes green in a 1.5 s inter-val. As the load grows, the blinking frequency of the diode in-creases. In case of a load larger than 110% of Ir, this LED will turn red and will begin to blink red just before tripping.

Located on the lower part of the MPS trip unit cover are two pho-tocells for communicating with the prospective signalling unit.

MPS trip units have tripping characteristics especially designed for practical purposes that provide for optimal exploitation of transformers up to 1.5 Ir. A total of 8 characteristics can be set on the trip unit. Mode “M” provides 4 characteristics suitable for protecting motors, and mode “TV” provides 4 characteristics for protecting transformers and lines. The shape of each character-istic can be changed with a selector switch.




tsd (7.2 x Ir) Restart Short circuit protec-tion (short time de-layed) Ii

A A S kA ms

40 1 (TV 1) T(0) 3

43 3 (TV 3) T(0) 5 0

46 10 (TV 10) T(0) 7

48 20 (TV 20) T(0) 9

50 20 (M 20) T(0) 3

55 15 (M 15) T(0) 5 100

58 8 (M 8) T(0) 7

3VT9210-6AS00 100 61 3 (M 3) T(0) 9

63 3 (M 3) T(t) 3

69 8 (M 8) T(t) 5 200

72 15 (M 15) T(t) 7

76 20 (M 20) T(t) 9

80 20 (TV 20) T(t) 3

87 10 (TV 10) T(t) 5 300

91 3 (TV 3) T(t) 7

100 1 (TV 1) T(t) 9

63 1 (TV 1) T(0) 3

69 3 (TV 3) T(0) 5 0

72 10 (TV 10) T(0) 7

80 20 (TV 20) T(0) 9

87 20 (M 20) T(0) 3

91 15 (M 15) T(0) 5 100

100 8 (M 8) T(0) 7

3VT9216-6AS00 160 110 3 (M 3) T(0) 9

115 3 (M 3) T(t) 3

120 8 (M 8) T(t) 5 200

125 15 (M 15) T(t) 7

130 20 (M 20) T(t) 9

137 20 (TV 20) T(t) 3

144 10 (TV 10) T(t) 5 300

150 3 (TV 3) T(t) 7

160 1 (TV 1) T(t) 9

100 1 (TV 1) T(0) 3

110 3 (TV 3) T(0) 5 0

115 10 (TV 10) T(0 7

125 20 (TV 20) T(0)) 9

137 20 (M 20) T(0) 3

144 15 (M 15) T(0) 5 100

160 8 (M 8) T(0) 7

3VT9225-6AS00 250 172 3 (M 3) T(0) 9

180 3 (M 3) T(t) 3

190 8 (M 8) T(t) 5 200

200 15 (M 15) T(t) 7

210 20 (M 20) T(t) 9

220 20 (TV 20) T(t) 3

231 10 (TV 10) T(t) 5 300

243 3 (TV 3) T(t) 7

250 1 (TV 1) T(t) 9


© Siemens AG 2011


Trip units

2/22 Siemens LV 36 · 2011

2


20

200

2000

50

500

5000

10

100

1000

10000

t [s]

L

I

NSO0_00221

1 2 5 20 50100.1 0.2 0.5x In

0.010.02

0.050.10.2

0.512

5

TV

300200

100

0

20

10

3

1

20

10

3

1

I

tr [s]

tv [ms]

Ir

L

S

Isd

In = 100 AIn = 160 AIn = 250 A

Ir tr Isdtv

min. max.

3 x I r

9 x I r

5 x I r

I n =

250

AI n

= 1

60 A

I n =

100

A

7 x I r

Ir tr tvIsd In

20

200

2000

50

500

5000

10

100

1000

10000

t [s]

NSO0_00222

1 2 5 20 50100.1 0.2 0.5x In

0.010.02

0.050.10.2

0.512

5

n

20158

3

20158

3

In = 100 AIn = 160 AIn = 250 A

tv [ms]

L

S

Isd

I n =

100

A

I n =

160

AI n

= 2

50 A I

M

Ir tr Isdtv

tr [s]

300200

100

0

Irmin. max.

Ir tr tvIsd In

7 x I r

5 x I r

3 x I r

9 x I r


© Siemens AG 2011


Trip units

2/23Siemens LV 36 · 2011

2

Trip units ETU DPN - Distribution protection with protected N pole• Provides protection for lines and transformers in TN-C-S and

TN-S networks

The 3VT9 2..-6BC00 trip unit is intended only for the 3VT2 725-.AA56-0AA0 switching unit. The operation of the DPN trip unit is controlled by a microprocessor. The DPN trip unit is equipped with a thermal memory that can be disabled by turn-ing a switch located on the front panel from position T(t) to posi-tion T(0). After disabling of the thermal memory, the thermal trip unit remains active.

The rated current Ir, delay for switching off the trip unit at 7.2 Ir, and the tripping level of the short-circuit tripping can be ad-justed.

The operational state is signalled by an LED indicator that flashes green in a 1.5 s interval. As the load grows, the blinking frequency of the diode increases. In case of a load larger than 110% of Ir, this LED will turn red and will begin to blink red just before tripping.

Located on the lower part of the DPN trip unit cover are two pho-tocells for communicating with the prospective signalling unit.

The current of the fourth pole (N pole) is adjusted using the IN switch as a multiple of the Ir current. Measuring of current on the fourth pole can be disabled by turning the button to the “OFF” position.



20

200

2000

50

500

5000

10

100

1000

10000

t [s]

NSO0_00223

1 2 5 20 50100.1 0.2 0.5x In

0.010.02

0.050.10.2

0.512

5

N

20

10

3

1

20

10

3

1

IiIrIN trIN

L

IIn = 100 AIn = 160 AIn = 250 A

tr [S]

Irmin. max.

Ii

I N =

0.5

x I r

1 x I r

0.75

x I r

IN Ir tr In Ii

9 x I r

7 x I r

4 x I r

2 x I r



tR (7,2 x Ir) Restart Instantaneous short circuit protection Ii

A A S kA ms

40 1 T(0) 3

43 T(0) 5 0

46 3 T(0) 7

48 T(0) 9

50 10 T(0) 3

55 T(0) 5 100

58 20 T(0) 7

3VT9 210-6BC00 100 61 T(0 9

63 20 T(t) 3

69 T(t) 5 200

72 10 T(t) 7

76 T(t) 9

80 3 T(t) 3

87 T(t) 5 300

91 1 T(t) 7

100 T(t) 9

63 1 T(0) 3

69 T(0) 5 0

72 3 T(0) 7

80 T(0) 9

87 10 T(0) 3

91 T(0) 5 100

100 20 T(0) 7

3VT9 216-6BC00 160 110 T(0) 9

115 20 T(t) 3

120 T(t) 5 200

125 10 T(t) 7

130 T(t) 9

137 3 T(t) 3

144 T(t) 5 300

150 1 T(t) 7

160 T(t) 9

100 1 T(0) 3

110 T(0) 5 0

115 3 T(0) 7

125 T(0) 9

137 10 T(0) 3

144 T(0) 5 100

160 20 T(0) 7

3VT9 225-6BC00 250 172 T(0) 9

180 20 T(t) 3

190 T(t) 5 200

200 10 T(t) 7

210 T(t) 9

220 3 T(t) 3

231 T(t) 5 300

243 1 T(t) 7

250 T(t) 9


© Siemens AG 2011


Auxiliary switches

2/24 Siemens LV 36 · 2011

2

■ Overview

Location of accessory compartments in 3VT2 circuit breakers

Order number according to contact arrangement

Functions and names of switches according to their location in accessory compartments

1) Accessory compartments 4, 5, 6 for 4-pole version only.

■ Function

States of auxiliary switches located in the switching unit accessory compartments

0 = contact open, 1 = contact closed1) Accessory compartments 4, 5, 6 for 4-pole version only.

Arrangement of contacts

Order No. Number of contacts Contact types

01 3VT9 300-2AC10 (20) 1 NO

20 3VT9 300-2AE10 (20) 2 NO

01 3VT9 300-2AD10 (20) 1 NC

02 3VT9 300-2AG10 (20) 2 NC

11 3VT9 300-2AF10 (20) 1 + 1 NC + NO

001 3VT9 300-2AH10 (20) 1 NC + NO

Accessory compartment

Switch name Switch function

1 Signalling Signalling switch to indicate the state of the circuit breaker by the trip unit

2 Relative Relative switch to indicate tripping of the circuit breaker by trip units, TEST push-button or by OFF pushbutton on the mo-torized operating mechanism

3, (4, 5, 6)1) Auxiliary Auxiliary switch to indicate the position of the main contacts

10 Leading Leading switch to make/break in advance of the main contacts

Circuit breaker state Accessory compartment

1 2 3 (4 ... 6)1) 10 2 and 3 2 and 3 2 and 3 1 2 3

Tog

gle

pos

ition

of c

ircui

t bre

aker

Sta

te o

f the

mai

n co

ntac

ts

3VT9

300

-2A

C10

3VT9

300

-2A

D10

3VT9

300

-2A

C10

3VT9

300

-2A

D10

3VT9

300

-2A

C10

3VT9

300

-2A

D10

3VT9

300

-2A

J00

3VT9

300

-1U

.10

3VT9

300

-2A

G10

3VT9

300

-2A

F10

3VT9

300

-2A

E10

3VT9

300

-2A

H10

3VT9

300

-2A

H10

3VT9

300

-2A

H10

Switched on 1 1 0 0 1 1 0 1 0 1 1 0 1 0 0 1 0 0 1 1 0

Switched off manually or electrically by operating mechanism

0 1 0 0 1 0 1 0 1 0 0 1 0 1 1 1 0 0 1 0 1

Switched off by trip unit 0 0 1 1 0 0 1 0 1 0 0 1 0 1 1 0 1 1 0 0 1

Switched off by auxiliary trip unit or by TEST button or the trip pushbutton on the motorized operating mechanism

0 1 0 1 0 0 1 0 1 0 0 1 0 1 1 1 0 1 0 0 1


© Siemens AG 2011


Auxiliary switches

2/25Siemens LV 36 · 2011

2

State of switches located in the switching unit accessory compartments


1) 3VT9 300-2A.10 is not suitable for controlling electromagnetic loads

2.3

3.3

2.1

3.3

2.1

3.1

1.3

1.1

1.2

1.4

1.4

1.2

1.1

2.4

3.4

2.2

3.4

2.2

3.2

NSO0

_002

24

5.3

5.1

5.2

5.4

5.4

5.2

5.1

4.3

4.1

4.2

4.4

4.4

4.2

4.1

6.3

6.1

6.2

6.4

6.4

6.2

6.1

2.3

2.1

2.2

2.4

2.4

2.2

2.1

3.3

3.1

3.2

3.4

3.4

3.2

3.1

10.Y

1

10.Y

310

.Y2

10.Y

43V

T9 3

00-2

AJ00

3VT9

300

-2AC

10

3VT9

300

-2AC

10

3VT9

300

-2AD

103V

T9 3

00-2

AH10

3VT9

300

-2AC

10

3VT9

300

-2AD

103V

T9 3

00-2

AH10

3VT9

300

-2AG

10

3VT9

300

-2AF

10

3VT9

300

-2AE

10

3VT9

300

-2AD

10

3VT9

300

-2AH

10

3VT9

300

-2AC

10

3VT9

300

-2AD

103V

T9 3

00-2

AH10

3VT9

300

-2AC

10

3VT9

300

-2AD

103V

T9 3

00-2

AH10

3VT9

300

-2AC

10

3VT9

300

-2AD

103V

T9 3

00-2

AH10

signaling auxiliary

acc. c. no. 2 + 3acc. c. no. 1

or or

early contact relative auxiliary

acc. c. no. 2 acc. c. no. 3 acc. c. no. 5acc. c. no. 4 acc. c. no. 6

auxiliaryauxiliary auxiliary

or or ororor oror orororor oror

acc. c. no. 10

Switches

Order No. 3VT9 300-2A.00 3VT9 300-2A.101) 3VT9 300-2AJ00 3VT9 300-2AH10 3VT9 300-2AH201)

Rated operational voltage Ue V AC 60 ... 500 DC 60 ... 500

AC 5 ... 60 DC 5 ... 60

AC 250 AC 24 ...250 DC 24 ...250

AC 5 ..60 DC 5 ...60

Rated isolation voltage Ui V 500 250


Rated operational current Ie/Ue

• AC-12 -- 0.004 ... 0.5A/5 V -- -- --

• AC-15 6 A/240 V, 4 A/400 V, 2A/500 V

0.004 ... 0.5A/5 V 1 A/AC 250 V 1.5 A/AC 250 V --

• DC-12 -- -- -- -- 0.01 A/DC 60 V

• DC-13 0.4 A/240 V, 0.3 A/400 V, 0.2 A/500 V

0.004 ... 0.01/60 V -- 0.2 A/DC 250 V --

Thermal current Ith A 10 0,5 -- 6 0.5

Arrangement of contacts 01, 10, 02, 11, 20 02, 11, 20 001 001

Connector cross-section S mm2 0.5 ... 1

Terminal protection (connected switch)

IP20


© Siemens AG 2011


Auxiliary trip units

2/26 Siemens LV 36 · 2011

2

■ Overview

Location of accessory compartments in 3VT2 circuit breakers

The particular rated operating voltage of the shunt trip unit is set up by jumpers located on the right hand side in the trip unit. Default setting is always the maximum value.

Order number of shunt trip units according to the rated operating voltage

Order number of undervoltage trip units according to the rated operating voltage

■ Function

Shunt trip units

Circuit breaker switched off by the shunt trip unit Circuit breaker states and toggle positions of the circuit breaker

Order No. Ue

3VT9 300-1SC00 AC/DC 4, 40, 48 V

3VT9 300-1SD00 AC/DC 10 V

3VT9 300-1SE00 AC 230, 400, 500 V/DC 220 V

Order No. Rated operating voltage Ue

3VT9 300-1UC00 AC/DC 24, 40, 48 V

3VT9 300-1UD00 AC/DC 110 V

3VT9 300-1UE00 AC 230, 400, 500/DC 220 V

20

20

20

20

30

30

01

01

01

01

01

t [ms]

NS

O0_

0022

6

246

135

3.4 3.3

3.2 3.1

2.4 2.3

2.2 2.1

Main contacts

Auxiliary switch

Auxiliary switch

Relative switch

Relative switch

acce

ssor

yco

mpa

rtm

ent

3

acce

ssor

yco

mpa

rtm

ent

2

Circuit breaker state Toggle positions of circuit breaker

Switched on

Switched off by trip units, or by TEST button or by the trip pushbutton on the motorized operating mechanism

Switched off manually or electrically by the operating mechanism

A2

10.Y

1A1 A1

U< U<

A2

10.Y

2

N- N-

3VT9

300

-1O

.00

3VT9

300

-1S

.00

L+ L+

NS

O0_

0023

0

or


© Siemens AG 2011


Auxiliary trip units

2/27Siemens LV 36 · 2011

2

Undervoltage trip units

Circuit breaker switched off by the undervoltage trip unit Circuit breaker states and toggle positions of the circuit breaker

Arrangement, number and type of contacts


Shunt trip units Undervoltage trip units

20

20

20

20

30

30

20

01

01

01

01

01

01

01

t [ms]

20

NS

O0_

0023

1

10.Y210.Y4

10.Y110.Y3

10.Y210.Y4

10.Y110.Y3

246

135

3.4 3.3

3.2 3.1

2.4 2.3

2.2 2.1

Main contacts

Auxiliary switch

Auxiliary switch

Relative switch

Relative switch

Early switch

Early switch

acce

ssor

yco

mpa

rtm

ent

2

acce

ssor

yco

mpa

rtm

ent

3

acce

ssor

yco

mpa

rtm

ent

10

Circuit breaker state Toggle positions of circuit breakers

Switched on

Switched off by trip units, by TEST button or by the trip pushbutton on the motorized operating mechanism

Switched off manually or electrically by operating mechanism

Arrangement of contacts Number of contacts Contact types

02 2 NC

11 1 + 1 NC + NO

20 2 NO

A2

10.Y

1A1 A1

U< U<

A2

10.Y

2

N- N-

3VT9

300

-1O

.00

3VT9

300

-1S

.00

L+ L+

NS

O0_

0023

0

or

Order No. 3VT9 300-1S.00

Rated operating voltage Ue V AC 24, 40, 48, 110, 230, 400, 500 DC 24, 40, 48, 110, 220


Input power at 1.1 Ue AC < 3 VADC < 3 W

Functional description U ≥ 0,7Ue the circuit breaker must trip

Time to switch-off ms 20

Continuous load Yes

Connection cross-section S mm2 0.5 ... 1

Terminal protection (connected trip unit)

IP20

Location in accessory compartment No.

10

1) Cannot be used in combination with 3VT9200-3M..0 motorized operating mechanism.

Order No. 3VT9 300-1U.00 3VT9 300-1U.101)

Rated operating voltage Ue V AC 24, 40, 48, 110, 230, 400, 500 DC 24, 40, 48, 110, 220


Input power at 1.1 Ue VAW

AC <3DC <3

Functional description1) U ≥ 0.85 Ue (circuit breaker can switch on)

U ≤ 0.35 Ue (the circuit breaker must trip)

Time to switch off ms 20

Continuous load Yes


Terminal protection(connected trip unit)

IP20

Location in accessory compartment No.

10

Leading switch

Rated operating voltage Ue V -- AC 250

Rated frequency fn Hz -- 50/60

Rated operating current Ie/Ue V -- AC 1 A/259

Arrangement of contacts -- 02, 11, 20

Connector cross-section S mm2 -- 0.5 ... 1

Terminal protection(connected trip unit)

-- IP20


© Siemens AG 2011



2/28 Siemens LV 36 · 2011

2

■ Overview

Rotary operating mechanism

The following components of the rotary operating mechanisms are required:• To switch the switching unit:

- 3VT9 300-3HE10 or 3VT9 300-3HE20 black knob- 3VT9 300-3HF20 red knob

• To switch the switching unit through the switchgear cabinet door:- 3VT9 300-3HJ..extension shaft- 3VT9 300-3HG/HH.. coupling driver for door-coupling oper-

ating mechanism- 3VT9 300-3HE/HF.. knob

Mechanical interlocks and mechanical interlock for parallel switching • Mechanical interlocks for fixed-mounted versions require the

following components:- 2 x 3VT9 200-3HA/HB.. rotary operating mechanism- 2 x 3VT9 200-3HE/HF.. knob

• Mechanical interlocking with Bowden wire is suitable for fixed-mounted, plug-in and withdrawable versions

• Mechanical interlocking with Bowden wire requires the follow-ing components:- 2 x 3VT9 200-3HA/HB.. rotary operating mechanism- 1 x 3VT9 200-3HE/HF.. knob

■ Design

Fig. 1: Rotary operating mechanism with knob

Fig. 2: Rotary operating mechanism with extension shaft, coupling driver and knob

The rotary operating mechanism makes it possible to actuate the circuit breaker by turning a knob, e.g. in order to switch ma-chines on and off. The modular concept of the operating mech-anisms allows simple mounting on the switching unit after the ac-cessory compartment cover is removed. The operating mechanism and its accessories must be ordered separately, (see page 2/6).• The rotary operating mechanism is attached to the switching

unit of the circuit breaker• The coupling driver is attached to the switchgear door. It pro-

vides degree of protection IP40 or IP66• The knob is placed on the rotary operating mechanism or on

the coupling driver• The extension shaft is available in two versions, standard

(length 365 mm - can be shortened) and telescopic (adjust-able length 245 ... 410 mm).

The rotary operating mechanism makes it possible to actuate the circuit breaker:

Operation from the front panel of the circuit breaker (Fig. 1)

3VT9 200-3HA/HB.. rotary operating mechanism + 3VT9 300-3HE/HF.. knob

Operation through the switchgear cabinet door (Fig. 2)

3VT9 200-3HA/HB.. rotary operating mechanism + 3VT9 300-3HJ.. extension shaft + 3VT9 300-3HE/HF.. knob + 3VT9 300-3HG/HH.. coupling driver

Operation through side wall of switchgear cabinet

3VT9 200-3HC/HD10.. rotary operating mechanism + 3VT9 300-3HJ.. extension shaft + 3VT9 300-3HE/HF.. knob + 3VT9 300-3HG/HH.. coupling driver

Enhanced safety for operator:• The rotary operating mechanism and knob allow operators to

lock the circuit breaker in position “switched off manually“. The unit and knob of the rotary operating mechanism can be locked by three padlocks with a shank diameter up to 6 mm

• Each coupling driver prevents the cabinet door from being opened when the circuit breaker is in on-state or after tripping. Types 3VT9300-3HG10 and 3VT9300-3HG20 prevent the cab-inet door from being opened when the circuit breaker is in the state "switched off manually" and when the rotary operating mechanism knob is locked out.

• Two circuit breakers with rotary operating mechanisms can be provided with mechanical interlocking or with parallel me-chanical switching (see page 2/30).


© Siemens AG 2011



2/29Siemens LV 36 · 2011

2

Features

Order No. Description Color Permits operator to lock the circuit break-er in OFF mode

Degree of protection

Switchgear cabinet door is locked when circuit breaker is

Length mm

switched on switched off manually and locked

3VT9 200-3HA10 Rotary operating mechanism grey no -- -- -- --

3VT9 200-3HA20 Rotary operating mechanism grey yes -- -- -- --

3VT9 200-3HB20 Rotary operating mechanism yellow yes -- -- -- --

3VT9 200-3HC10 Rotary operating mechanism grey no -- -- -- --

3VT9 200-3HD10 Rotary operating mechanism grey no -- -- -- --

3VT9 300-3HE10 Knob black no -- -- -- --

3VT9 300-3HE20 Knob, lockable with padlock black yes -- -- -- --

3VT9 300-3HF20 Knob, lockable with padlock red yes -- -- -- --

3VT9 300-3HG10 Coupling driver black -- IP40 yes yes --

3VT9 300-3HG20 Coupling driver yellow -- IP40 yes yes --

3VT9 300-3HH10 Coupling driver black -- IP66 yes no --

3VT9 300-3HH20 Coupling driver yellow -- IP66 yes no --

3VT9 300-3HJ10 Extension shaft, can be shortened -- -- -- -- -- 365

3VT9 300-3HJ20 Extension shaft, telescopic -- -- -- -- -- 245 ... 410


© Siemens AG 2011


Mechanical interlocking and parallel switching

2/30 Siemens LV 36 · 2011

2

■ Function

3VT9 300-8LA00 Mechanical interlocking

Mechanical interlocks make sure that two circuit breakers can-not trip simultaneously, but always just individually. Both circuit breakers may be switched off simultaneously. Interlocking can be used between two 3VT2 circuit breakers or between one 3VT2 and one 3VT3 circuit breaker. Both circuit breakers must be furnished with rotary operating mechanisms (at least one of them with a rotary operating mechanism and knob).

When using a mechanical interlock it is required to comply with the dimensions shown in the figure and in the table.

3VT9 300-8LB00 Mechanical parallel switching

Mechanical interlocks for parallel switching are for simultaneous switching of two circuit breakers. Parallel switching can be used between two 3VT2 circuit breakers or between 3VT2 and 3VT3 circuit breakers. Each circuit breaker must be furnished with a rotary operating mechanism and at least one of them with a knob.

When using a mechanical interlock for parallel switching it is re-quired to comply with the dimensions shown in the figure and in the table.

1) Switching unit 3VT3 4P (4-pole version) must be located on the right side.

Left switching unit

Right switching unit

3VT2 3-pole

3VT2 4-pole

3VT3 3-pole

3VT3 4-pole

X L X L X L X L

mm mm mm mm mm mm mm mm

3VT2 3P 105 112 140 145.5 122.5 128.5 181 185.5

3VT2 4P 105 112 140 145.5 122.5 128.5 181 185.5

3VT3 3P 122.5 128.5 157.5 145.5 140 145.5 185 189

3VT3 4P 122.5 128.5 157.5 145.5 140 145.5 185 189

X

L

531

TEST

NS

O0_

0023

3

Left switching unit

Right switching unit

3VT2 3-pole

3VT2 4-pole

3VT3 3-pole

3VT3 4-pole1)

X L X L X L X L

mm mm mm mm mm mm mm mm

3VT2 3P 105+7 112+7 140+7 145.5+7 122.5+7 128.5+7 x x

3VT2 4P 105+7 112+7 140+7 145.5+7 122.5+7 128.5+7 x x

3VT3 3P 122.5+7 128.5+7 157.5+7 145.5+7 140+7 145.5+7 x x

3VT3 4P 122.5+7 128.5+7 157.5+7 145.5+7 140+7 145.5+7 x x

TEST

NS

O0_

0023

4

RP-BD-CK10

PSPSPS

X

TEST

RP-BD-CK10

PSPSPSSPSV

TEST

RP-BD-CK10

PSPSPSSPSV

NS

O0_

0023

5


© Siemens AG 2011


Mechanical interlocking and parallel switching

2/31Siemens LV 36 · 2011

2

3VT9 300-8LC.0 Mechanical interlocking • Provides mechanical interlocking of two circuit breakers/ switch disconnectors, so that they cannot both trip simultane-ously, but only one of them at a time. Both circuit breakers may be turned off simultaneously.

• The 3VT9 200-8LC10 mechanical interlocking is intended for two 3VT2 circuit breakers. 3VT9 300-8LC20 interlocking is in-tended for one 3VT2 circuit breaker and one 3VT3.

• Circuit breakers can be delivered in fixed-mounted, plug-in and withdrawable versions.

Circuit breaker installation in switchgear and controlgear assemblies

Detailed information is included in the "Instructions for use", which is available on our website: www.siemens.com/technical assistance

Order No. of mechanical interlocking

3VT9 200-8LC10 3VT9 300-8LC20

Circuit breaker types 3VT2 3VT3

3VT2 3VT2

30

4510

9 NS

O0_

0023

6

0 ... 700

ON

OFF

TEST

ON

OFF

TEST

min. 80

R

= 4

0m

in


© Siemens AG 2011


Motorized operating mechanism

2/32 Siemens LV 36 · 2011

2

■ Design

The motorized operating mechanism is equipped with spring storage units. The energy stored in the springs makes it possible to switch the circuit breaker on in less than 50 ms. Releasing the spring energy storage unit and tripping the circuit breaker is en-sured by a closing coil. The motorized operating mechanism can trip the circuit breaker in 800 ms. This method of tripping is suitable for most technological applications. When faster circuit breaker tripping is required (e.g., because an emergency STOP button was pressed), it is possible to use the motorized mecha-nism in combination with an undervoltage trip unit or a shunt trip unit.• The motorized operating mechanism front panel contains a

selector switch for selecting the drive modes. There is also the possibility to remotely indicate the selector switch state. - The first mode is automatic remote control (selector switch in

position AUTO). This is the standard position in automatic operation.

- The second mode is manual control (selector switch position MANUAL). In manual mode the motorized operating mecha-nism does not need any voltage to perform perform open-ing/closing operations.

• Remote switching on and off in position AUTO is carried out with pushbuttons that must be connected to the motorized op-erating mechanism connector. Furthermore, this position makes it is possible to control the circuit breaker with the pushbuttons located on the motorized operating mechanism front panel.

• In MANUAL mode it is possible to switch on and off with the green and red pushbuttons located on the front panel of the motorized operating mechanism cover. The function of the re-mote control ON button in MANUAL mode is locked out, whereas the function of the remote control OFF button remains active for safety reasons.

• The motorized operating mechanism, as opposed to the cir-cuit breaker, recognizes only two fixed positions. In the first position the circuit breaker is ON. When the circuit breaker is tripped in AUTO mode by the trip unit or shunt/undervoltage trip units, then because of mechanical link between the circuit breaker and the motor mechanism, a pulse will be generated to automatically wind up the spring of the storage unit. The motor mechanism can be wound up automatically by perma-nent closing switch S. In the second fixed position the circuit breaker is switched off and the loaded drive is ready to switch the breaker on after it has received the setting pulse.

• The motorized operating mechanism makes it possible to con-trol the circuit breaker after the loss of control voltage. In MAN-UAL and AUTO modes, it is possible to wind up the storage unit by repeated rotation of the foldable handle. After charging the spring mechanism with spring energy, it is possible to switch the circuit breaker on and off with the control buttons lo-cated on the front panel of the motor mechanism.

• The front panel incorporates a storage unit status indicator to indicate what state the 3VT3 motor mechanism unit storage is in and whether it is possible to switch the circuit breaker on. The 3VT3 motor mechanism is also able to remotely indicate the storage status. A corresponding signal is issued to the ter-minal strip. 3VT2 motor mechanism have optional designs, alternatively with MANUAL/AUTO indication.

• The mechanism can be furnished with an electromechanical operations counter that may be installed in the drive cover or outside of the circuit breaker (e.g. in the switchgear door). A metal holder included in the scope of supply of the external operations counter. Connecting is facilitated with connectors.

• The motorized operating mechanism can be locked in off po-sition using as many as three padlocks with shank diameter max. 4.3 mm.

• A 3VT9 300-3MF20 cover can be attached to the ON-OFF switch of the motorized operating mechanism, and then sealed with sealing wire. The cover prevents turning on the cir-cuit breaker from the drive panel.

• Extension cable 3VT9 300-3MF00 has a connector on one side that connects to the connector located on the motor mechanism and conductors on the other side that connect, for example, to a terminal block.

1) For sequence of control pulses, see 2/36.

Order No. 3VT9 200-3M..0

Operational voltage Ue V AC 24, 48, 110, 230, 400, 500 DC 24, 48, 110, 220


Control pulse length for storing ms 400 ... ∞1)

Control pulse length ms 20 ... 7001), 400 ... ∞1)

Time before switching on ms < 50

Time before switching off ms 800

Frequency of cycles ON/OFF 3 contact making/min

Frequency of cycles - instant successive ON/OFF cycles

10 contact making

Mechanical endurance 30000 contact making

Input power AC VA DC W

100100

Protection

• AC 24, 48, 110 V; AC 230 V LSN 4C/1; LSN 2C/1

• DC 24, 48, 110 V; DC 220 V LSN-DC 4C/1; LSN-DC 2C/1

Rated operating current AUTO/MANUAL switches Ie/Ue

V AC 5 A/250 DC 0.5A/250

Order No. 3VT9 300-3MF00

Number of conductors 12

Conductor cross sections S mm2 0.35

Conductor lengths cm 60


© Siemens AG 2011



2/33Siemens LV 36 · 2011

2

■ Function

Circuit breaker switched on/off by the motorized operating mechanism

Circuit breaker switched on by the motorized operating mecha-nism – electrically by pushbutton ON

Circuit breaker switched off by the motorized operating mecha-nism – electrically by pushbutton OFF

Wiring diagram Circuit breaker states and toggle positions of the circuit breaker

Wiring diagram description

50

50

40

01

01

01

01

01

01

01

t [ms]

20

20

NS

O0_

0023

8

246

135

3.4 3.3

3.2 3.1

2.4 2.3

2.2 2.1

10.Y210.Y4

10.Y110.Y3

10.Y210.Y4

10.Y110.Y3

Main contacts

Auxiliary switch

Auxiliary switch

Relative switch

Relative switch

Early switch

Early switch

acce

ssor

yco

mpa

rtm

ent

2

acce

ssor

yco

mpa

rtm

ent

3

acce

ssor

yco

mpa

rtm

ent

10

20

800

800

800

01

01

01

01

01

01

01

t [ms]

900

900

NS

O0_

0023

9

246

135

3.4 3.3

3.2 3.1

2.4 2.3

2.2 2.1

10.Y210.Y4

10.Y110.Y3

10.Y210.Y4

10.Y110.Y3

Main contacts

Auxiliary switch

Auxiliary switch

Relative switch

Relative switch

Early switch

Early switch

acce

ssor

yco

mpa

rtm

ent

2

acce

ssor

yco

mpa

rtm

ent

3

acce

ssor

yco

mpa

rtm

ent

10

M P

NC

L +

MP

PE N -

6X3

8 2X4

2 1

C

S5

NO

X351439 7

OF FB

Q3

ON

S

Motor drive

Recommended wiring of the control circuits

Ext. oper.counter

Circuit breaker state Toggle positions of circuit breaker

Switched on



Symbol Description


M Motor

P storage mechanism

X3 Connector to connect control circuits

X4 Connector for external operations counter

S5 Switch indicating AUTO/MANUAL modes

YC external 3VT9300-3MF10 operations counter

B recommended wiring of the control circuits (not included in operating mechanism order)

ON make pushbutton

OFF break pushbutton

S Switch for energy storage(switched on = automatic storage, may be continuously switched on)

Q3 Motorized operating mechanism circuit breaker


© Siemens AG 2011



2/34 Siemens LV 36 · 2011

2

Tripping of the circuit breaker with motorized operating mecha-nism by the trip unit (switch S – automatic spring charging)

Tripping of the circuit breaker with motorized operating mecha-nism by a shunt trip unit or undercurrent trip unit (switch S – automatic spring charging)

Wiring diagram

Circuit breaker switched on by the motorized operating mecha-nism (electrical ON signal) and switched off by the shunt trip unit

Circuit breaker switched on by motorized operating mechanism (electrical ON signal) and switched off by the undervoltage trip unit

20

20

20

20

30

30

30

520

520

30

01

01

01

01

01

01

01

t [ms]

520

520

NS

O0_

0024

1

246

135

3.4 3.3

3.2 3.1

2.4 2.3

2.2 2.1

1.4 1.3

1.2 1.1

Main contacts

Auxiliary switch

Auxiliary switch

Relative switch

Relative switch

Early switch

Early switch

acce

ssor

yco

mpa

rtm

ent

2

acce

ssor

yco

mpa

rtm

ent

3

acce

ssor

yco

mpa

rtm

ent

1

20

20

20

20

30 520

30 520

01

01

01

01

01 N

SO

0_00

242

t [ms]

246

135

3.4 3.3

3.2 3.1

2.4 2.3

2.2 2.1

acce

ssor

yco

mpa

rtm

ent

3

acce

ssor

yco

mpa

rtm

ent

2

Main contacts

Auxiliary switch

Auxiliary switch

Relative switch

Relative switch

L+Q3

X3

MP

NC NO

S5C

X3 JX4 A2

B2

A1 B1

PE YCN-

9 7

8

3

6

4

2

1

2

5

1

N-

M P U< U

NS

O0_

0024

3

3VT9

300

-1O

.00

3VT9

300

-1S

.00

S

B

Motor drive

ON

OFF

acc. c. no.10

or

Ext. oper.counter


L+Q3

X3

MP

NC NO

S5C

X3 JX4 A2

B2

A1 B1

PE YCN-

9 7

8

3

6

4

2

1

2

5

1

N-

M P U< U

NS

O0_

0024

4

3VT9

300

-1U

.00

3VT9

300

-1S

.00

S

B

Motor drive

ON

OFF

acc. c. no.10

or

Ext.oper.counter



© Siemens AG 2011



2/35Siemens LV 36 · 2011

2

Recommended actuating pulses

Circuit breaker switched on/off by motorized operating mecha-nism – switch S permanently closed (automatic spring charging) or open

Circuit breaker switched off by trip unit or shunt/undervoltage trip units and switched on by the motorized operating mecha-nism – switch S permanently closed (automatic spring charging)

Circuit breaker switched off by the rip unit or shunt/undervoltage trip units and switched on by the motorized operating mecha-nism – S switch closed only for storing

Description of charts

Circuit breaker states and toggle positions of the circuit breakersNS

O0_

0024

5t [ms]

10

10

10

HK

PS

400 … ∞

800

800

20 … 700

> 100> 1400

50

> 600

IMP OFF IMP ON

NS

O0_

0024

6

t [ms]

10

10

10

HK

RS

R

520

20 … 700> 1400

50

> 880

OFF

IMP ON

NS

O0_

0024

7

t [ms]

10

10

10

HK

RS

R

X + 520

20 … 700> 1400X

50

400 … ∞

> 880

> 100

OFF

IMP ONIMP S

Symbol Description

HK main contacts

PS auxiliary switch

RS relative switch

R OFF circuit breaker closes instantly, by trip unit

IMP S pulse to charge spring mechanism

IMP ON make pulse for motorized operating mechanism

IMP OFF break pulse for motorized operating mechanism

X random segment of time

Circuit breaker state Toggle positions of circuit breakers

Switched on




© Siemens AG 2011



2/36 Siemens LV 36 · 2011

2

Use of 3VT9 200-3M..0 motorized operating mechanism in the automatic standby system

Wiring diagram of the motorized operating mechanism of the circuit breaker

In a standby system, if a Bowden cable is used for mechanical interlocking, then an auxiliary trip unit should be used to switch the circuit breaker off. Otherwise, the first attempt of switching a standby circuit breaker may fail.

Recommended control pulses for switching of the 3VT2 circuit breakers by the motorized operating mechanism after their switching off by a shunt trip unit or undervoltage trip unit in the automatic standby system

Symbol Description

M Motor

P Energy storage device

X3 Connector for connection of control circuits

X4 Connector for external cycle counter

S5 Switch indicating AUTO (NO-C)/MANUAL (NC-C) mode

YC External 3VT9 300-3MF10 cycle counter

B Recommended connection of control circuits (is not included in the motorized operating mechanism supply)

ON Pushbutton

OFF Pushbutton

S Switch for storage (closed = automatic storage; it can be closed permanently)

Q3 Motorized operating mechanism circuit breaker-see page 2/32

L+Q3

X3

MP

NC NO

S5C

X3 JX4 A2

B2

A1 B1

YC

9 7

8

3

6

4

2

1

2

5

1

N-PE

M P U< U

NS

O0_

0007

8

3VT9

300

-1U

.00

3VT9

300

-1S

.00

S

B

ON

OFF

cav. no.10

or

Cyclecounter

Control circuit

Motor drive

Symbol Description

HK Main contacts

RS Relative switch

SV Pulse for shunt trip unit

SP Pulse for undervoltage trip unit

IMP ON Motorized operating mechanism make pulse

IMP OFF Motorized operating mechanism storage pulse (generated by S switch)

Switched on

Switched off by trip units, TEST or REVISION pushbutton

Switched off manually or by motorized operating mecha-nism electrically (wound up state)

20

01

01

01

01

01 N

SO

0_00

080

t [ms]

HK

SP

SV

RS

200

200 … 700

> 880520

50

> 1400

IMP ON

20

01

01

01

01

01 N

SO

0_00

081

t [ms]

HK

SP

SV

RS

>200

> 100

200 … 700400 … ∞

> 880X + 520

50X > 1400

IMP ONIMP S


© Siemens AG 2011


Mounting accessoriesfor plug-in version

2/37Siemens LV 36 · 2011

2

■ Overview

Plug-in bases

3VT9 200-4PA30 Locking plug-in base against base inserting the circuit breaker/disconnector

The plug-in version of the circuit breaker/switch disconnector is intended for demanding industrial applications where rapid ex-change of the circuit breaker is needed.• The plug-in base includes complete accessories for assem-

bling a circuit breaker/switch disconnector in plug-in design from the original fixed-mounted version

• The components of the plug-in base are:- supporting part of the plug-in base - 2 connection sets (total of 6 terminals) for fitting on to the

switching unit- interlocking connecting rod (ensures automatic switching off

of the circuit breaker for handling – inserting and removal)- set of mounting bolts for securing circuit breaker into plug-in

base (to secure plug-in base into switchboard, a set of mounting bolts is used that is included in the scope of supply of the 3VT2 725-.AA36-0AA0 switching unit.

Main circuit• The 3VT9 200-4TA30 connecting set is used for connecting

with busbars or cable lugs and is included in the scope of sup-ply of the 3VT9 275-.AA36-0AA0 switching unit

• For connecting in another way, it is necessary to use connect-ing sets (see page 2/9)

• The type of connections must comply with our recommenda-tions (see page 2/11).

Auxiliary circuits

These are connected using a 3VT9 300-4PL00 15-wire cable.

Coding

3VT9 200-4WN00 coding set

The plug-in base and the circuit breaker can be provided with a coding set, which prevents inserting any other circuit breaker into the plug-in base.

Position signalling

3VT9 300-4WL00 position signalling switch

The plug-in base may be provided with a maximum of four switches (for 4-pole version, max. 6 switches) for signalling the connected/removed position.

States of 3VT9 300-4WL00 switches in the plug-in base according to the circuit breaker position

0 = contact open, 1 = contact closed1) Accessory compartments 19 and 20 are for 4-pole version only.

Technical specifications

A wiring diagram showing the circuit breaker situated in a plug-in mounting base and outfitted with accessories, is shown on page 2/13.

Plug-in base with motorized operating mechanism

Circuit breaker, plug-in version, with motorized operating mechanism

Accessory compartment 11 ... 14 (19, 20)1)

Circuit breaker position

Connected 0 1

Removed 1 0

Order No. 3VT9 300-4WL00

Rated operational voltage Ue V AC 400 AC 250

Rated isolation voltage Ui V AC 500



AC-13 3 A/400 V

DC-15 0.15 A/250 V, 3 A/125 V, 4 A/30 V

Thermal current Ith A 6

Arrangement of contacts 001



IP20

2

1

4


© Siemens AG 2011

3VT2 Molded Case Circuit Breakers up to 250 ATechnical Information - Accessories and ComponentsMounting accessoriesfor plug-in version

2/38 Siemens LV 36 · 2011

2

Recommended wiring of the circuit breaker in plug-in design with motorized operating mechanism

Unplugging the circuit breaker with motorized operating mechanism• Each time before removing the circuit breaker, we recommend

first to turn the AUTO/MANUAL switch on the motorized oper-ating mechanism to the MANUAL position

• More operating information is available in the operating in-structions

• Not adhering to this procedure or failing to follow the recom-mended wiring, could mean that the circuit breaker will not successfully switch on at the first attempt.

L+Q3

X3

MP

NC NO

S5C

X3 X4

PEYC

N–

9 7

8

3

6

4

2

1

2

5

1

M P

NS

O0_

0020

8S

B

Operatingcounter

Motor drive

Motor drive control circuits

ON

OFF

Symbol Description


M Motor

P energy storage device

X3 terminal strip to connect control circuits

X4 terminal strip for external operations counter

S5 Switch indicating AUTO (NO-C)/MANUAL (NC-C) modes


B recommended wiring of the control circuits (control circuits not included in motorized operating mechanism delivery)

ON make pushbutton


S Switch to store energy

Q3 Motorized operating mechanism circuit breaker for AC 24 V LSN 4C/1 AC 48 V LSN 4C/1 AC 110 V LSN 4C/1 AC 230 V LSN 2C/1 DC 24 V LSN-DC 4C/1 DC 48 V LSN-DC 4C/1 DC 110 V LSN-DC 4C/1 DC 230 V LSN-DC 2C/1


© Siemens AG 2011


Mounting accessoriesfor plug-in version

2/39Siemens LV 36 · 2011

2

Changes in states of switches when inserting and withdrawing the circuit breaker

0 = contact open, 1 = contact closed1) Accessory compartments 4, 5, 6 are for 4-pole version only.

State of switches before removing inserted position →

State of switches after removing withdrawn position

Accessory compartment Accessory compartment

1 2 3 (4,5,6)1) 1 2 3 (4,5,6)1)

Kno

b p

ositi

on o

fci

rcui

t bre

aker

Sta

te o

f the

mai

n co

ntac

ts

3VT9

300

-2A

C10

3VT9

300

-2A

D10

3VT9

300

-2A

C10

3VT9

300

-2A

D10

3VT9

300

-2A

C10

3VT9

300

-2A

D10

3VT9

300

-2A

C10

3VT9

300

-2A

D10

3VT9

300

-2A

C10

3VT9

300

-2A

D10

3VT

9300

-2A

C10

3VT9

300

-2A

D10

Switched on 1 1 0 0 1 1 0 0 1 0 0 0 1

Manually switched off or switched off by motorized operating mechanism

0 1 0 0 1 0 1 1 1 0 0 0 1

Switched off by trip units 0 0 1 1 0 0 1 1 0 1 0 0 1

Switched off from switched-on state: by means of auxiliary trip unit, TEST pushbutton or by OFF pushbutton lo-cated on the motorized operating mecha-nism

0 1 0 1 0 0 1 1 1 0 0 0 1

4

3

2

1

4

3

2

1

4

3

2

1

4

3

2

1

4

3

4

3

4

3

2

1


© Siemens AG 2011

3VT2 Molded Case Circuit Breakers up to 250 ATechnical Information - Accessories and ComponentsMounting accessoriesfor withdrawable version

2/40 Siemens LV 36 · 2011

2

■ Design

Withdrawable version mounting base

Circuit breaker installed 3VT9 200-4WA30 in withdrawable version base withdrawable version base

The withdrawable version of the circuit breaker/switch-discon-nector is intended for demanding industrial applications where rapid exchange of the circuit breaker and frequent checking of the circuit are needed.• The withdrawable version base includes all parts needed to

convert a circuit breaker or switch disconnector from fixed-mounted version to withdrawable version.

• The components of the withdrawable version are:- supporting part of the withdrawable version- 2 movable side plates- 2 connection sets (total of 6 terminals) for fitting onto the

switching unit- interlocking connecting rod (ensures automatic switching off

of the circuit breaker for handling, inserting and withdrawing)- a set of mounting bolts is used to fasten the withdrawable

version mounting base into the switchboard

Main circuit• The 3VT9 200-4TA30 connecting set is used for connecting

with busbars or cable lugs and is included in the scope of sup-ply of the 3VT2 725-.AA36-0AA0 switching unit

• For connecting in another way, it is necessary to use connect-ing sets (see page 2/9)

• The type of connections must comply with our recommenda-tions (see page 2/11).

Auxiliary circuits

These are connected using the 3VT9 300-4PL00 15-wire cable.

Coding

3VT9 200-4WN00 coding set

The withdrawable version mounting base and the circuit breaker can be provided with a coding set, which prevents inserting an-other circuit breaker into the withdrawable version mounting base.

Position signalling

3VT9 300-4WL00 position signalling switch

The withdrawable version can be provided with switches for sig-nalling the position of the circuit breaker, see table.

Technical specifications

For wiring diagram of the circuit breaker in plug-in base with ac-cessories, see page 2/13.

States of 3VT9 300-4WL00 switches in withdrawable device according to circuit breaker and lockout positions

0 = contact open; 1 = contact closed1) Accessory compartments 19 and 20 are for 4-pole version only.

• Operating state is always in locked-out position• In locked-out position, it is possible to lock the withdrawable

device, so that the circuit breaker cannot be switched on (for more detailed information, see “Advantages and enhanced safety for operator”)

Order No. 3VT9 300-4WL00

Rated operational voltage Ue V AC 400, AC 250

Rated isolation voltage Ui V AC 500



AC-13 3 A/400 V

DC-15 0.15 A/250 V, 3 A/125 V, 4 A/30 V

Thermal current Ith A 6

Arrangement of contacts 001



IP20

Accessory compartment

11,12,13,14 (19, 20)1)

15,17 (19, 20)1)

16,18

Circuit breaker and lockout position

Connected and unlocked 0 1 1 0 0 1

1 1 1 0 1 0

Withdrawn and unlocked 1 0 0 1 0 1

1 0 0 1 1 0

Removed and unlocked 1 0 1 0 0 1

1 0 1 0 1 0

2

1

44 2

1

44 2

1

44


© Siemens AG 2011


Mounting accessoriesfor withdrawable version

2/41Siemens LV 36 · 2011

2

Locking

Locking the circuit breaker Locking the withdrawable version in withdrawable version base against inserting the circuit breaker base against tampering

Withdrawable version with motorized operating mechanism

Recommended wiring of the circuit breaker in withdrawableversion with motorized operating mechanism

Description

Inserting and withdrawing the circuit breaker with motorized operating mechanism• Each time before inserting or withdrawing the circuit breaker,

we recommend placing the AUTO/MANUAL switch on the mo-torized operating mechanism to MANUAL position

• More operating information is available in the operating instructions

• Not adhering to this procedure or failing to follow the recom-mended wiring, could mean that the circuit breaker will not successfully switch on at the first attempt.

L+Q3

X3

MP

NC NO

S5C

X3 X4

PEYC

N–

9 7

8

3

6

4

2

1

2

5

1

M P

NS

O0_

0020

8

S

B

Operatingcounter

Motor drive

Motor drive control circuits

ON

OFF

Symbol Description


M Motor

P energy storage device

X3 terminal strip to connect control circuits

X4 terminal strip for external operations counter

S5 Switch indicating AUTO (NO-C)/MANUAL (NC-C) modes


B recommended wiring of the control circuits (control cir-cuits not included in motorized operating mechanism delivery)

ON make pushbutton


S Switch to charge spring mechanism

Q3 Motorized operating mechanism circuit breaker for AC 24 V LSN 4C/1 AC 48 V LSN 4C/1 AC 110 V LSN 4C/1 AC 230 V LSN 2C/1 DC 24 V LSN-DC 4C/1 DC 48 V LSN-DC 4C/1 DC 110 V LSN-DC 4C/1 DC 230 V LSN-DC 2C/1


© Siemens AG 2011

3VT2 Molded Case Circuit Breakers up to 250 ATechnical Information - Accessories and ComponentsMounting accessoriesfor withdrawable version

2/42 Siemens LV 36 · 2011

2

Switches in the accessory compartments of the switching unit

Changes in states of the switches when inserting and withdrawing the circuit breaker1

0 = contact open, 1 = contact closed1) Accessory compartments 4, 5, 6 are for 4-pole version only.

State before inserted/withdrawn position State after inserted/withdrawn position

Circuit breaker before insertion State of switches before insertion - withdrawn position →

State of switches after insertion - connected position

Circuit breaker before withdrawal State of switches before withdrawal - connected position →

State of switches after withdrawal - withdrawn position

Accessory compartmentK

nob

pos

ition

of c

ircui

t b

reak

erS

tate

of t

he m

ain

cont

acts

1 2 3 (4,5,6)1) 1 2 3 (4,5,6)1)

3VT9

300-

2AC

10

3VT9

300-

2AD

10

3VT9

300-

2AC

10

3VT9

300-

2AD

10

3VT9

300-

2AC

10

3VT9

300-

2AD

10

3VT9

300-

2AC

10

3VT9

300-

2AD

10

3VT9

300-

2AC

10

3VT9

300-

2AD

10

3VT9

300-

2AC

10

3VT9

300-

2AD

10

Switched on 1 1 0 0 1 1 0 1 0 1 0 0 1

Manually switched off or by motorized operating mechanism

0 1 0 0 1 0 1 1 0 1 0 0 1

Switched off by trip units 0 0 1 1 0 0 1 0 1 1 0 0 1

Switched off from switched-on state: by means of auxiliary trip unit, TEST pushbutton or by OFF push-button on the motorized operating mechanism

0 1 0 1 0 0 1 1 0 1 0 0 1

4

3

2

1

4

3

2

1

4

3

2

1

4

3

2

1

4

3

2

1

4

3

2

1


© Siemens AG 2011


Insulating barriers and terminal covers

2/43Siemens LV 36 · 2011

2

■ Overview

Use of insulating barriers and terminal covers with circuit breakers and switch disconnectors

Fixed-mounted version

Front connection• Terminals 1, 3, 5

- If Ue = AC 415 V, it is necessary to use 3VT9 300-8CE30 insulating barriers or 3VT9 200-8CB30 terminal covers.

- If insulated conductors are not used for connecting the main circuit to terminals 1, 3, 5, flexibars or rear connection, it is necessary to use 3VT9 300-8CE30 insulating barriers or a 3VT9 200-8CB30 terminal cover.

• Terminals 2, 4, 6- If the circuit breaker/switch disconnector is connected to the

source with terminals 2, 4, 6 and if Ue = AC 415 V, it is nec-essary to use 3VT9 300-8CE30 insulating barriers or a 3VT9 200-8CB30 terminal cover.

- If insulated conductors are not used for connecting the main circuit to terminals 2, 4, 6, and flexibars or rear connections are not used, then it is necessary to use 3VT9 300-8CE30 in-sulating barriers or 3VT9 300-8CB30 terminal covers.

Rear connection• Neither insulating barriers nor terminal covers have to be

used.

Plug-in and withdrawable versions

Neither insulating barriers nor terminal covers have to be used.

NS

O0_

0010

5

AA

1A

2B = 105 C = 80

225

20

B = 20105 105 105 B = 20

3VT9 200-8CB30D

B = 0 C = 0

TEST

2 4 6

ON

OFF

1 3 5

TEST

2 4 6

ON

OFF

1 3 5

TEST

2 4 6

ON

OFF

1 3 510

0 …

150

1 1

1

A Minimum distance between the circuit breaker/switch-disconnector and uninsulated earthed wall (applicable for con-nections using insulated conductors, cables, flexibars or with rear connection)

A1 Minimum insulation length of bare conductors (using 3VT9 300-8CE30 insulating barriers from 50 mm to max. 100 mm, or by adding additional insulation for the conductors with barriers to obtain at least A1 value)

A2 Minimum distance:• between circuit breaker/switch disconnector and uninsulated

earthed wall (applicable for uninsulated conductors and bus-bars)

• between circuit breaker/switch disconnector and busbar• between two circuit breaker/switch disconnectors situated ver-

tically above one another• between uninsulated connections of two circuit breakers/switch

disconnectors above one another

B, C Minimum distance between circuit breaker/switch disconnector and uninsulated earthed wall

D Minimum distance between uninsulated conductors


© Siemens AG 2011


Insulating barriers and terminal covers

2/44 Siemens LV 36 · 2011

2

1) Ik = max. short-circuit current in the protected circuit (rms).

D

> 15

mm

NS

O0_

0010

6Flexibar

Busbar

max. 3 mmmax. 3 mm

Cable

AC Ue 230 V 415 V 500 V 690 V

3VT2 H wired with Ik 1) ≤ 100 kA > 36 ... 65 kA ≤ 36 kA ≤ 25 kA ≤ 13 kA

3VT2 N wired with Ik ≤ 60 kA ≤ 36 kA ≤ 16 kA ≤ 10 kA

C < 80 mm A (mm) 50 50 50 50 50

D ≥ 10 mm A1 (mm) 100 150 100 150 150

A2 (mm) 200 250 200 250 250

A (mm) 50 50 50 50 50

D ≥ 30 mm A1 (mm) 100 150 100 150 150

A2 (mm) 150 200 150 200 200

C ≥ 80 mm A (mm) 50 50 50 50 50

D ≥ 10 mm A1 (mm) 100 150 100 150 150

A2 (mm) 150 200 150 200 200


© Siemens AG 2011

Documents

LV36 Kap02.book Seite 2 Dienstag, 17. Mai 2011 2:17 14 MCCB UP TO 2… · Manual/motorized operating mechanisms 2/6 Siemens LV 36 · 2011 * You can order this quantity or a multiple